Over 200 Forest Service fire personnel have tested positive for COVID-19

And 141 CAL FIRE employees

November 5, 2020   |   4:17 p.m. MST

CORONAVIRUS and FirefightersAt least 219 U.S. Forest Service personnel involved in firefighting have tested positive for COVID-19 so far this year, according to Stanton Florea, a Fire Communications Specialist for the agency.

Since early March, 141 employees of the California Department of Forestry and Fire Protection have tested positive, said Alisha Herring, Education, Outreach, and Engagement Officer for the agency on November 5.

Jim Gersbach, Public Information Officer for the Oregon Department of Forestry, told Wildfire Today that “among all wildland firefighters in Oregon this summer – not just ODF personnel — seven tested positive.”

Wildfire Today has also learned from other sources that more than half a dozen members on one of the teams managing wildland fires have also tested positive in recent weeks. In the interests of privacy we will not identify the team.

Two months ago the Forest Service reported 122 positive tests. The Bureau of Land Management had 45 which at the time included one person in critical condition and one fatality from the virus.

No deaths were reported among fire personnel in the U.S. Forest Service, Oregon Department of Forestry, or CAL FIRE.

As this was written at 4:17 p.m. MST November 5, the National Park Service and the Bureau of Land Management had not provided updated numbers of their fire personnel that have tested positive.

For the most part wildland firefighters have adapted to the reality of working with the continuing threat of COVID-19. Here are examples of mitigation measures taken by wildland fire organizations:

  • Physical distancing and wearing face coverings.
  • Daily self-assessments.
  • Only one person from a unit or module attend physical briefings; or,
  • Briefings by radio, rather than in large groups.
  • Distributed Camps and multiple staging areas, having a much smaller number of people than traditional Camps or Incident Command Posts. This puts an added burden on the Logistics section, but is safer for all.
  • Some crews have become virtually self-sufficient for days at a time, carrying enough equipment and supplies to prepare their own meals.
  • “Module as One”, means a crew is treated as a family, not individuals. When together and away from others, they would not have to physically distance or wear masks.
  • Crew Time Reports (CTR) showing the hours worked each day can be submitted and approved electronically.
  • Demobilization documents can also be emailed and signed remotely.
  • Email incoming resources a short in-brief with PDF maps, digital CTRs, digital time sheets.
  • Use QR codes to provide access to maps and Incident Action Plans.
  • Use a Unit Log to record all close human contacts outside of the Module As One, in order to facilitate contact tracing if someone tests positive.
  • Establish trigger points around COVID-19 for PPE, sanitation, and holding capacity. Don’t order more resources than you can sustain.
  • When feasible, Air Tankers work from a home base and return to that location at the end of each day. Before this year, especially when there have been less than 24 large air tankers on contract, they would often be repositioned for days at a time, frequently staying overnight in different cities.

Fire officials are discovering that some of the measures above might continue to be used after the pandemic since they can enhance efficiency and productivity.

One high-ranking fire official who spent much of the summer on fires told us that some incident management teams (IMT) are applying the mitigation measures to a greater extent than others. The Alaska IMT for example, is very careful and requires that incoming personnel from the Lower 48 states be tested before they travel and after they arrive in Alaska. Some teams are adamant about wearing face coverings while others are not.

There are anecdotal reports that the mitigation measures taken this year have reduced the occurrence of diseases that are sometimes common at large fires, such as respiratory and digestive disorders.

The video below, posted by the Wildland Fire Lessons Learned Center, shows an AeroClave, an automated no-touch decontamination unit. In addition to treating a meeting room it can be used to decontaminate engines, helicopters, and ambulances.

Senators call for creation of wildland firefighter job series and an increase in firefighters’ pay

In August 600 US Forest Service firefighter positions were unfilled

Firefighter on the Myrtle Fire
Firefighter on the Myrtle Fire in the Black Hills of South Dakota, July 22, 2012.

The way the federal government manages wildland firefighters made a small step recently toward gaining enough attention that their issues might be acted upon somewhere down the road. In addition to the legislation that has been introduced this year to establish a wildland firefighter job series and pay them a living wage, two senators wrote a letter to the Secretaries of Agriculture and Interior asking for those issues to be addressed, and also to waive the annual salary cap restrictions for fire personnel and convert seasonal firefighters to permanent.

The letter pointed out that in August 600 US Forest Service firefighter positions were unfilled. In a record-setting year for fires in California and Colorado, having about six percent of the jobs vacant is a problem. Is is also an indication that retention is an issue that needs to be addressed.

The letter was written by the two senators from California, Dianne Feinstein and Kamala Harris. Talking about improving the firefighter program does not accomplish anything, alone. Writing a letter to the Secretaries is a slightly stronger step, as is introducing legislation. PASSING meaningful legislation to make these improvements is what needs to be done, if the executive branch of government can’t or won’t do it on their own.

Below is the full text of the letter written by the senators:


October 19, 2020

The Honorable Sonny Perdue                         The Honorable David Bernhardt

Secretary of Agriculture                                 Secretary of the Interior

1400 Independence Avenue, SW                   1849 C Street, NW

Washington, D.C. 20250                                Washington, D.C. 20240

Dear Secretary Perdue and Secretary Bernhardt:

As California and the West contend with yet another historic and destructive wildfire season, it has become clear that we are entering a “new normal” in which increasingly intense wildfires wreak havoc during a nearly year-round fire season. So far this year, California has had over 8,600 wildfires, which have burned a record-setting 4.1 million acres, killed 31 people, and destroyed more than 9,200 homes and structures. Given the increasing demands placed on firefighters and the fact that the federal government owns 57% of the forest land in California, federal firefighting agencies must adapt to ensure that firefighters have the resources they need. To that end, we write with three requests:

1.  In conjunction with the Office of Personnel Management, please review and consider increasing the General Schedule (GS) pay scale for all wildland firefighters employed by the Departments of Agriculture and Interior. As a part of this effort, we urge you to consider creating a new, separate job series and GS pay scale for federal wildland firefighters to ensure their pay is commensurate with other firefighting agencies and reflects their training requirements and the hazardous conditions they must endure.

The Pacific Southwest Region of the Forest Service has informed us that “hiring and retention is becoming increasingly difficult due to the high cost of living, increasing minimum wage and the significant discrepancy in salary compensation compared to other wildland fire organizations in [California].” For example, the annual base salary for an entry-level Cal Fire firefighter is $58,000; whereas the base salary for an entry-level Forest Service firefighter stationed in the San Francisco Bay Area is just $33,912. The Pacific Southwest Region has further informed us that as a direct result of low, non-competitive pay, nearly 600 Forest Service firefighter positions (seasonal and permanent) were unfilled as of August—a time when California’s fire activity increased substantially. Federal firefighters are specialized workers who face great risk to protect our families, homes, businesses and natural resources. Their salaries must reflect that, and we simply cannot afford to have so many firefighter positions unfilled.

2.  Please examine and consider waiving the annual salary cap restrictions for fire personnel who exceed the GS pay ceiling while working overtime on wildfire emergencies. If Congressional action is necessary to waive these restrictions, please indicate so.

It is our understanding that some federal firefighters are working so many extra hours that they will soon reach the annual pay cap for GS employees and become ineligible for overtime compensation. Being asked to work for no pay places an unfair expectation on federal firefighters. It also serves as a dangerous disincentive for personnel to respond to fires, especially later in the season when conditions are often most dangerous in California. Given that states face different peaks in their fire seasons, we must ensure that federal firefighters remain available later in the year when California’s wildfires are often at their worst.

3.  Please consider reclassifying seasonal federal firefighter positions as permanent, and let us know what additional resources or authorities you might need from Congress to do so.

It has become increasingly clear that wildfires in the West are no longer a seasonal phenomenon and that we can, therefore, no longer afford to have a seasonal firefighting workforce.  Transitioning to a larger, full-time workforce would add immediate capacity to fight wildfires nationwide, allow for greater flexibility in shifting personnel between regions depending on wildfire activity, provide more stable work opportunities and employee benefits, increase employee retention, and reduce agency costs and burdens associated with the seasonal hiring process.

Some of California’s largest active wildfires—including the biggest in State history, which has now exceeded 1 million acres—are burning on federal land. While we are grateful that Cal Fire, local agencies, and other states and countries have sent crews to help fight wildfires on federal lands, the federal government must address the long-term issues with our federal firefighting workforce. Making salaries competitive enough to fill positions and retain personnel, addressing overtime caps, and transitioning seasonal roles to permanent posts are critical first steps. We urge you to address them as soon as possible, and we stand ready to help.

Sincerely,

(end of letter)


For more on Wildfire Today about these issues:

Tough fire season takes toll on firefighters’ mental health

North Pole Fire South Dakota
Chain saw operator on the North Pole Fire west of Custer, SD March 10, 2015. Photo by Bill Gabbert.

By Sophie Quinton, staff writer for Stateline

Reprinted from PEW Stateline

Josh Baker just got home from a 50-day deployment to three California wildfires. Although his job wasn’t dangerous — he worked on a support team, making calls to track down equipment such as port-a-potties and bulldozers — the hours were long, the stakes were high and the work was exhausting.

He’s still feeling tense. “I’m anxious, nerves are kind of frayed, things that would normally not be a big deal — kind of water off a duck’s back — hit a little harder,” said Baker, a California Department of Forestry and Fire Protection (Cal Fire) fire captain who spoke to Stateline as a member of the agency’s union, Local 2881.

Being a wildland firefighter has always involved long hours, personal risk and weeks away from home. But this year has been something else: More than 4 million acres burned in California alone. Entire towns were torched in Washington and Oregon. Smoke was so thick the sky turned orange over West Coast cities.

Now state and federal officials and mental health experts are bracing for firefighters to come home and start processing what they’ve been through. It’s not uncommon for wildland firefighters, even in a less-intense year, to develop depression, post-traumatic stress disorder, unhealthy substance use or suicidal thoughts.

“When you almost die on a wildfire, away from your family and kids — that doesn’t go away,” said a U.S. Forest Service smokejumper who asked to remain anonymous for fear of reprisal from his employer. “I know people who wake up in the middle of the night, and in their dreams they’re getting burned over by a fire, because they almost did.”

This year feels like a breaking point for many firefighters, said Mike West, who resigned as a fire dispatcher for the U.S. Forest Service this summer after 17 years working various fire-related jobs for the agency. His resignation letter, which detailed his struggles with post-traumatic stress, has been widely shared online.

“People are burned out,” West said. “They’re incredibly tired. And I think it’s been building for several years, and this is the year people are finally being more open [about mental health].”

State and federal agencies are trying to connect employees with counselors, chaplains and tools for managing trauma. But union officials and mental health experts say state and federal lawmakers must also fund more firefighter jobs and improve pay and mental health benefits, with severe fire seasons set to increase because of climate change.

“We can’t even get relief for our guys on these major fires,” said Tim Edwards, president of Local 2881. He wants the California legislature to hire hundreds more full-time firefighters to give people like Baker more time off to decompress. But state budgets are tight because of the pandemic and face many competing priorities.

The Forest Service smokejumper has started an online petition asking Congress to pay for a psychologist at every National Forest headquarters, mental health paid leave, better salaries for entry-level firefighters and better benefits for temporary employees. Federal firefighter salaries start at about $26,000 a year, not including hazard pay.

“The whole thing, to me, is mental health,” he said of his proposals. “To me [hiring] the psychologist is treating the problem. It’s not preventing it.”

The petition has collected more than 30,000 signatures in two months.

Some firefighters are heading home with memories of crew members who died in a fire. Others have lost their homes to wildfire or are returning to damaged communities. And like everyone else, they’re contending with the coronavirus pandemic.

Baker had been home with his wife and young daughter for less than an hour when he learned that a firefighter he’d worked with had COVID-19. Baker cloistered himself in a spare room for a few days until his own test results came back negative.

Some forestry experts say the pressure on firefighters will subside only when policymakers and the public invest more money in reducing wildfire risk, such as by clearing brush from around homes. Western states such as California have been ramping up investment in such projects.

“Ultimately, that’s what’s going to make it safer for fighters, is a healthy, restored, resilient ecosystem,” said Tim Ingalsbee, a wildland fire ecologist and executive director of Firefighters United for Safety, Ethics and Ecology, a Eugene, Oregon-based nonprofit.

An Increasingly Stressful Job

Tens of thousands of Americans are involved in fighting wildfires, from full-time federal and state employees to seasonal hires, private contractors, prison inmate crews and local fire department volunteers. Cal Fire alone employs 6,100 full-time fire professionals and 2,600 seasonal firefighters.

Unlike their city counterparts, wildland firefighters typically deploy for weeks or months, working long hours and usually sleeping in tents or catching quick naps in the dirt. When employees go home at the end of a fire season, it can be tough to readjust to normal life.

“That’s when the post-traumatic stress takes its toll on the wildland guys, the off-season,” said Burk Minor, director of the Wildland Firefighter Foundation, a Boise, Idaho-based group that raises money to help injured firefighters and the families of firefighters who died on the job.

West said that for years, he suppressed feelings about two close calls escaping wildfires in his early 20s. Going home became a struggle, particularly after his kids were born. “I was really hyper-vigilant, you know,” he said. He startled easily and would grow impatient and irritable when, for instance, a line at a restaurant buffet moved slowly.

The job has become more dangerous in recent years, largely because of climate change. Dry conditions and high winds in California are fueling fire behavior that firefighters have never seen before, Baker said.

“I hate to say it, because it sounds cliché, but every time we have these large-scale fires we say, ‘This is a career fire,’ or, ‘You’ll never see this again in your career,’” he said. “And every year, you’re topping that.”

In a farewell letter posted online this spring, Aaron Humphrey, a California hotshot crew supervisor (hotshots are on the front lines of fighting fire) explained that the 2018 Carr Fire — a blaze so intense it spawned a terrifying tornado — was his breaking point, reached after years of suppressing the strain of managing a fire crew.

“The day the fire tornado came and everyone did the best they could I lost the mental fight. … I felt dead inside that night,” he wrote. He spiraled into angry outbursts, heavy drinking and depression.

And as fires grow and more people move to forested areas, firefighters are both facing more pressure to protect communities and witnessing more human suffering.

“Now if you even lose one acre, that could be several people’s homes,” said Nelda St. Clair, a retired U.S. Bureau of Land Management (BLM) administrator who now manages crisis stress management training for wildland firefighters for the U.S. Bureau of Indian Affairs.

“The suicide rate in wildland fire is much higher than it is in municipal fire departments, or the general population,” said St. Clair, who keeps an informal tally of wildland firefighter suicides.

She said many wildland firefighters who die by suicide have experienced a traumatic event on the job, which can later fuel stress disorders, relationship problems and unhealthy substance use.

West said that after a close friend of his died on the fire line in 2013, the negative thoughts and emotions he’d been battling for years intensified. By 2017, he said, “I was having nightmares, I was having anxiety memory loss.” He had suicidal thoughts, too.

A Changing Culture

State and federal agencies have for decades conducted mental health training for wildland firefighters after catastrophic events, such as the death of a fire crew member. More recently, agency leaders have ramped up efforts to prepare firefighters for stressful and traumatic experiences and to encourage them to reach out for help.

“What we’ve been very successful at is changing the culture,” said Ted Mason, fire and aviation national safety program manager for the BLM. He said the profession is shifting away from the traditional, suck-it-up stoicism of first responders.

Cal Fire now has about 20 staff members who work full time with struggling employees and recommend counseling services and other resources, said Mike Ming, staff chief of Cal Fire’s behavioral health and wellness program. The agency also has trained staff all over the state to serve as peer support personnel who can offer colleagues a friendly ear.

Ming’s team sometimes sets up trailers at fire base camps that firefighters can duck into for a confidential discussion with a trained peer. Sometimes, he said, firefighters will walk into a trailer and just start crying.

The agency also is training firefighters to recognize the signs of stress and trauma and combat them with techniques such as deep breathing, Ming said. “Over time, if they don’t have the positive coping tools and skills … oftentimes people find themselves on their knees reaching out for help.”

But more needs to be done, St. Clair said. Although the culture of wildland firefighting is changing, “we’re not there yet.”

It’s difficult for anyone to reach out and ask for help, she said. “It’s more difficult for a wildland firefighter. They’re terrified that if anybody knows about it they’ll lose their jobs. They’re terrified that the people they depend on won’t trust them.”

And some employees still slip through the cracks. State and federal jobs generally offer an employee assistance program that includes access to a handful of free counseling sessions, for instance. But temporary workers lose access to that benefit when they’re laid off at the end of fire season.

People experiencing post-traumatic stress can need more specific help than general counseling. After initially being referred to a local marriage counselor by the Forest Service’s employee assistance program, West, who lives in a rural area that has few mental health providers, decided instead to drive 90 miles to see a trauma specialist.

“The guy was very nice,” West said of the marriage counselor. “But he didn’t really understand firefighting or what I was dealing with.”

It can also be difficult for firefighters to claim workers compensation for post-traumatic stress disorder, particularly at the federal level.

California lawmakers last year approved legislation that will make it easier for certain state and local firefighters and law enforcement officers to make such claims from 2020 to 2025. As of last March, Florida and Minnesota had similar laws on the books, according to the National Conference of State Legislatures, a Denver and Washington, D.C.-based group that advises state lawmakers.

Next Steps

This fire season has been so bad that agency officials and union leaders are calling for more mental health support for wildland firefighters and other public lands employees.

The Oregon State Department of Forestry has hired an outside contractor to connect employees with mental health professionals and chaplains. “These fires hit home for a lot of our employees,” said Patricia Kershaw, human resources manager for the agency. “It’s communities where they live, some lost their homes, some had families that lost their homes.”

U.S. Forest Service management and union leaders are discussing how to better support workers in Western states, said Randy Meyer, safety committee chair for the Forest Service Council of the National Federation of Federal Employees.

“There’s been a lot of talk about trying to delve into critical stress management,” Meyer said, “and possible or even probable PTSD issues with firefighters in particular, but our Forest Service employees in general.” Some employees have watched decades of work on public lands go up in smoke, he said.

Meyer said there’s also talk of expanding the agency’s employee assistance program to temporary workers after they’ve been laid off. But that might require an act of Congress.

“It’s not just a fiscal issue,” Meyer said. “We can’t spend money on people that aren’t employed by the agency.”

Baker agreed with Edwards, the Local 2881 president, that while it’s vital for firefighters to have mental health support they also need more time to go home and unwind between deployments.

“While having those resources is great,” he said, “it’s putting a Band-Aid on a bigger issue, which is the amount of personnel.”

The recession caused by the pandemic has squeezed state budgets and made new investments difficult, however. California Gov. Gavin Newsom, a Democrat, in January proposed spending $120 million this year and $150 million in future years to hire 677 more full-time Cal Fire firefighters and staff.

The legislature instead approved — and the governor in June enacted — $85.6 million to hire 172 new full-time firefighters and staff, as well as seasonal workers. Newsom later used emergency funds to hire over 850 more seasonal firefighters.

The Forest Service smokejumper said anecdotally he’s hearing wildland firefighter jobs are getting harder to fill, perhaps because of the low pay, tough schedule and risk. “There are less and less people who want to do that,” he said.

West is now working as an eighth-grade teacher, fulfilling a longtime dream and spending more time with his wife and two young kids. He said he no longer feels ashamed or embarrassed by his mental health struggles. “Hearing other people talk about it helped me talk about it,” he said.


This article first appeared in Stateline, an initiative of The Pew Charitable Trusts.

Firefighters on Glass Fire evaluated for possible carbon monoxide exposure

October 6, 2020   |   2:31 p.m. PDT

The north end of the Glass Fire
The north end of the Glass Fire, as seen from St Helena South camera at 225 p.m. PDT Oct. 6, 2020. Looking east. AlertWildfire.

Sixteen firefighters assigned to the Glass Fire near the Napa Valley in Northern California were evaluated for possible carbon monoxide exposure Tuesday morning October 6. One was transported to a hospital and the others were allowed to return to their duties.

CAL FIRE said the exposure occurred at a location off-site out of the fire area. The personnel were evaluated by members of the Santa Rosa Fire Department and medical personnel assigned to the incident.

CAL FIRE did not disclose where the firefighters were or what they were doing when the possible exposure occurred. Five ambulances were dispatched to the CAL FIRE incident command post at the Sonoma County Fairgrounds in Santa Rosa Tuesday morning.

The Glass Fire has burned 66,840 acres, 310 homes, and 12 commercial buildings.

UPDATE October 7, 2020   |   12:09 a.m. PDT:

Pat McLean, a spokesperson for CAL FIRE, said on October 7, “16 firefighters were evaluated yesterday. Fifteen were cleared to go right back to active duty yesterday and the 16th was evaluated at the hospital and has since been released back to full duty as well.”

When asked where the firefighters were when they were exposed to carbon monoxide, Mr. McLean said, “I don’t have that information. They were outside, they were not on the fire, nor were they at base camp.”

He said he did not have information about the source of the carbon monoxide. The incident is being investigated.

Breathing smoke

October 4, 2020   |   6:09 a.m. PDT

 

Photographers at a wildland fire may be able to use and tolerate a mask that traps 95 percent of the 0.3 micron particulates in smoke, but the devices are not practical for firefighters. (see photo above)

In case you are wondering, masks and respirators are divided into rating classes: N is not oil resistant, R is oil resistant, and P is oil proof. The number, such as 95, refers to the percent of particles removed that are at least 0.3 microns in diameter.

Be careful out there.

Model predicts a large, long-duration fire could cause 1 to 13 firefighter fatalities from COVID-19

August 11, 2020 | 1 p.m. MDT

Lolo Peak Fire
Lolo Peak Fire at 6:25 p.m. MDT August 19, 2017 as seen from the Missoula area. Photo by Dick Mangan.

Researchers developed a COVID-19 epidemic model to highlight the risks posed by the disease during wildland fire incidents. A paper published August 1, 2020 details how  they started with actual mobilization data from the Resource Ordering and Status System (ROSS) for three 2017 wildfires that had different characteristics — the Highline Fire, which burned for much of the summer but the personnel peaked early in the effort; the Lolo Peak Fire, which spanned July through September and had a relatively symmetric mobilization and demobilization phase; and the Tank Hollow Fire, which was shorter than the other two, and had fewer personnel throughout the incident.

 firefighters wildfire COVID-19
Figure 1. Total personnel assigned and expected to be at the fire camp (e.g., non-aerial resources) for three large incidents over time; data are from the Resource Ordering and Status System. From the study.

The variables that were modeled included the number of infected persons arriving at a fire, the rate of secondary infections caused by an infected person, infection fatality rate, and the number of people assigned to the fire each day.

There are also many other variables that are difficult or impossible to account for, such as social distancing at the incident, protocols followed by personnel in the weeks before the assignment, how much time they spend at fire camp, mode of travel to and during the incident, wearing of masks, testing before and during the incident, working remotely, and others.

Below is an excerpt from the study:


“Models are, by definition, an abstraction of reality and are subject to the accuracy of the parameters. Wildfires and the COVID-19 pandemic are each complex dynamic phenomenon, and the combination of the two produces great uncertainty. Therefore, we stress the limits of our model and highlight the qualitative results of the analysis rather than the estimated numbers.

“In this study, we focused on two sources of case growth on an incident. The first is the introduction of infection by personnel arriving on an incident. As the fire grows and the incident becomes more complex, resource orders will be filled by available personnel, some of whom may come from other counties or states. Given the variation in the COVID-19 prevalence around the country at any given point in time, the firefighters from different areas will introduce variable risk to the camp. While current policies require or request symptomatic individuals to report their conditions and inform supervisors, evidence suggests that many infected people may experience very mild symptoms. These asymptomatic individuals may remain infectious for weeks, perhaps posing the greatest risk of infection through a camp. The combination of exposure risk posed by the high turnover of personnel coming from a large number of places in concert with the exposure risk due to non-quarantined infectious individuals highlights the potential merits of developing testing strategies for early identification, which could include testing asymptomatic individuals without known or suspected exposure. The utility of such testing strategies is conditioned by the availability, timeliness, and reliability of viral tests, and the optimal testing strategy design could be the subject of future research.

“The second source of case growth on an incident that we examined was the spread among personnel while assigned to the fire. In the event that personnel arrive at an incident exposed or infected, their level of interaction with others will determine the rate of transmission within the camp. The rate of transmission will depend on the level of interaction between the personnel at the incident and the nature of those interactions. Under normal circumstances, personnel may gather in large groups, for example, for briefings or meals. These interactions are similar to potentially infectious interactions in the general public that public health agencies have deemed ill-advised. Some of these interactions could be made less risky using current social distancing and mitigation recommendations; for example, masks appear to provide a barrier to the spread of SARS-CoV-2. Recognizing that a range of mitigations is already being planned or put into place by incident management personnel, these analyses provide a proxy for a business-as-usual baseline as a point of comparison.

“We studied two types of interventions corresponding to the two types of source growth identified above: the screening of personnel arriving at the incident to address the case growth by the entry of the virus and the spread from non-quarantined infectious individuals, and social distancing measures within the fire camp to address the case growth from the spread among individuals in the camp. While both interventions mitigate transmission and lead to fewer cases, screening measures are relatively more effective on shorter incidents with a frequent resource turn over. In contrast, social distancing measures are relatively more effective on prolonged campaigns where most of the cases are due to transmission within the community.”

infected individuals firefighters wildfire COVID-19
Figure 4. Total number of infected individuals over the duration of each incident under the low (0.1%), medium (1%), and high (5%) entry rates of infected individuals. Note that the vertical axis is log scaled. All simulations assume R0 of 2.68. From the study.

The researchers found that a large, long-duration fire with a hundreds of personnel is likely to have more infected individuals and fatalities than shorter-duration incidents with fewer individuals. Under COVID-19 conditions, a fire like the 2017 Lolo Peak Fire south of Missoula could have, according to their modeling, from less than 1 or up to 13 fatalities from the disease.

Cumulative deaths firefighters wildfire COVID-19
Figure 3. Cumulative deaths over time for the baseline scenario with variable infection fatality rates. Note that the vertical axis is not log scaled for this figure. From the study.

The study was conducted by Matthew P. Thompson, Jude Bayham, and Erin Belval. It was supported by Colorado State University and the U.S. Forest Service. (Download the study; large 1.9 Mb file.)