State warns of avian flu surge amid migration

BY PAOLO ZIALCITA COLORADO PUBLIC RADIO

Highly pathogenic avian in uenza, the disease spreading among wild and domestic bird populations nationwide, is expected to have a surge in cases as the migratory season begins in Colorado.

It’s been nearly a year since the rst outbreak in Colorado, and while cases have slowed, Colorado state veterinarian Maggie Baldwin said the risk will go up as more ocks of birds pass through.

“[ ese wild birds] are bringing more virus, they’re shedding more virus in the environment, and we’re likely gonna see more spillover of that virus into our domestic poultry operations on both the commercial and the backyard side,” Baldwin said.

So far, about 6.4 million chickens have either been killed by the virus or put down to prevent outbreaks within a ock. Hundreds of wild birds, mostly geese and ducks, have also been killed by the virus. Death is all but guaranteed for birds that contract it, and symptoms include sudden fatigue, decreased egg production, and nasal discharge.

e avian u has recently been linked to deaths in mammals that consumed infected birds.

e nationwide outbreak has driven up egg prices across the country. According to federal data, a dozen eggs cost an average of $4.83 as of January 2023, up from the average of $1.93 recorded a year prior.

“What we can likely expect is across the nation, we’re going to see another increase in cases this spring, and that’s really what led to consumer impacts was when we had a lot of our commercial egg laying populations impacted around the same time,” Baldwin said.

With the length of the outbreak hitting “unprecedented” levels, Baldwin acknowledges that fatigue may be setting in for commercial and domestic owners. However, she urges owners to keep up their biosecurity measures. When big, commercial farms are impacted, it takes months and millions of dollars to recover from a mass death event.

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raising backyard chickens e federal government is discussing the possibility for a large-scale avian u vaccination program for poultry, and e New York Times reports a potential vaccine is already being tested. ere’s “no clear end in sight” for this avian u outbreak, Baldwin said. With no treatment available and the uncontrollable nature of bird migration coming back into play, it appears this strain of avian u is here to stay. is story is from CPR News, a nonpro t news source. Used by permission. For more, and to support Colorado Public Radio, visit cpr.org.

Baldwin, along with experts from Colorado Parks and Wildlife and Colorado State University, will host a webinar next week to share more information about the avian u and how to keep ocks safe this spring.

Avian u cases among humans are extremely rare, and they usually occur only when people are heavily exposed to infected poultry.

“ e USDA is really the rst step in getting that approval process started because, if you vaccinate, there are potential trade implications,” Baldwin said.

In the meantime, agriculture o cials and veterinarians are still searching for other solutions.