Bat on stump bites angler along St. Joe River

Silver-haired bats are among the most common bat species found in forested areas of the United States. (Associated Press)

Rabies treatment required

It appeared as though nothing was biting when a Spokane fly fisher approached Idaho’s St. Joe River around 5 p.m. last Wednesday.

The situation changed instantly when Tyler Comeau put his hand on a bat.

“No fish were rising and it seemed pretty dead,” the recent Eastern Washington University graduate said.

He was scrambling down a steep trail on the south side of the river to fish a pool upstream from Avery.

“I had fly rods in my left hand and was grabbing tree branches with my right hand to keep from slipping,” he said. “I was about 6 feet from the river when I braced my hand on a stump and felt a sharp pain in my finger.

“There was an odd noise and I saw something fall to the ground. It was a bat screeching at me. I had two pinhole cuts in my index finger. I must have accidentally put my hand on its face.”

In hindsight, Comeau has learned that he probably should have found a way to capture the grounded bat to bring to medical officials.

“I figured it was bad news, but I’d never dealt with a potential rabies situation before,” he said.

With the bat on the ground making noise and acting defensive, Comeau went to the water and washed his finger with soap.

“Then I just went fishing,” he said. “My friend and I had been dredging with nymphs and doing quite well for fish up to 18 inches.’

When he left the river, he noticed the bat had crawled back up the side of the stump.

“It was making really uncomfortable noises and baring its teeth,” he said.

The next day, he sought medical attention and began getting his education about rabies.

“The urgent care wouldn’t touch me, and the (Spokane Regional) Health District directed me to the hospital emergency room,” he said.

“The first thing I learned was that I’d just finished my most expensive fly-fishing trip ever,” he said.

Hospital officials told Comeau the average cost to treat for rabies is $10,000.

“I’m still working with my insurance, but initially they’ve told me it basically would not be covered.”

Dorothy MacEachern, epidemiologist with the Spokane Regional Health District, said she has referred cases to health care providers that treat rabies for around $4,000, depending on the case. However, Comeau said neither the Health District nurse on duty nor the front desk staff gave him that information.

MacEachern also said she’d be surprised if a health insurance company did not cover rabies treatment. “It’s not an elective; it’s a life-saving treatment,” she said. “Rabies is fatal.”

Bat bites are extremely rare, even for people who work with them.

“I know many bat biologists who have worked around thousands of bats during their careers, but I’ve never heard any of them recount being attacked by a bat or even getting one caught in their hair,” said Ella Rowan, Washington Department of Fish and Wildlife biologist who works with bats.

However, bats – like most wild critters – will bite when someone tries to hold them. “We anticipate this, are vaccinated against rabies and wear (thick, leather) gloves,” she said.

About 5 percent of the bats Washington health districts test are rabid, MacEachern said. Considering that sick bats are the easiest to catch and bring in for testing, experts believe the rate of rabies in bats is lower than 5 percent, she said.

Scientific literature pegs the average incidence of rabies in bats at about 0.5 percent, variable by species, Rowan said.

However, in the St. Joe River incident, the silver-haired bat’s reluctance to fly wasn’t necessarily an indicator of its health.

“It’s difficult for that species to take off from the ground,” she said. “They usually have to climb up to get some vertical to drop from.

“As for the vocalizations, it’s pretty normal for bats to make tons of noises when we capture them or disturb them.”

Silver-haired bats – one of the more easily identified of the region’s various bat species – usually roost in tree cavities, but may be on the outside of tree trunks or in the foliage, she said. Sometimes people find them roosting on their firewood piles.

“A few bat species have been found using tree stumps as roosts. They like the region where the bark buckles away.”

The forest along the St. Joe River is a prime place for bats, since they feed on the same insects that nourish the river’s famous cutthroat trout.

Yet Rowan said Comeau simply had an extremely unlucky day to be bitten by a bat in the outdoors.

“I’ve heard of fly fishers hooking bats in the evening while they were casting,” she said. “But I’ve never heard of a fisherman being bitten.”

When people say they’ve been bitten by a bat, health officials suggest capturing the bat with something like a blanket or bucket and bringing it in for testing.

“You can’t bop it on the head because it can’t be tested effectively if its brain is damaged,” MacEachern said.

“Then you have to keep it in a cooler or refrigerator until it’s tested,” Rowan added. “Sorry to hear the fisherman was bit, but I’m glad he is seeking treatment and didn’t ignore the incident.”

Rabies treatments aren’t as painful as they used to be when they were administered in the abdomen. After the initial six painful injections in the finger at the site of the bite, the rest will be in his arm, Comeau said.

“There’s no doubt this is the thing to do,” he said. “I checked and learned that Idaho’s had two silver-haired bats test positive for rabies this year. “I also looked into the disease, and I can’t think of a worse way to die.”

Meantime, he’s revised his sense of threats and rewards while fishing the region’s streams.

“I always figured moose were the animal I had to fear the most,” he said.”And I’ve had dreams about saving the money for a $10,000 fly-fishing trip some day. But I thought it would be for tarpon.”

Silver-haired bats

 Silver-haired bats are among the most common bats in forested areas of the United States. They’re considered medium-size, weighing up to half an ounce with a wing span of up to 12 inches.

 Their dark brown-black hairs are tipped with silver, but the icy-looking hairs do not extend to the face or neck. Ears are short, rounded and furless.

 Typically, they are a solitary, tree-roosting species that feeds on insects, mostly in the air but occasionally on the ground.

 They mate in fall and females give birth to two pups from late June to early July.

Tidbits: Silver-haired bats are one of the slowest flying bats in North America. Their lifespan is estimated at up to 12 years.

On the Web: Listen to one of the sounds made by a silver-haired bat,

If bitten by a bat…

Clean the wound with soap and water and get medical attention.

Capture the bat if possible, avoiding direct contact, by catching it with a net, trapping it in a bowl or bucket, covering it with a towel or blanket, or grasping while wearing thick leather gloves.

Keep the bat in a sealed container, store in a cooler or refrigerator (not in the freezer) and contact the local Public Health department.

Don’t release a live bat or throw out a dead bat that has bitten, scratched or had direct contact with a person or pet unless Public Health has said testing will not be necessary.

Testing: Bats are tested for rabies at the Washington State Public Health Laboratories. Rabies test results can be available within 2 days of arrival at the lab. If the bat is available for testing, it may not be necessary to begin the rabies post-exposure prophylaxis (PEP) treatment prior to learning the test results.

Treatment: Although successful rabies treatment can begin a week or more after a bite in some cases, Center for Disease Control experts say early treatment is more reliable than later treatment.

When in doubt: If the bat is not available for testing, a person who is bitten will always be advised to complete the rabies PEP series (administered in the arm).

Source: Dorothy MacEachern, Spokane Regional Health District, and Brett Petersen, Center for Disease Control, Atlanta