It was a quiet summer for bird flu: Egg prices fell a bit, fewer sick poultry flocks were culled on farms, and officials took a breath.
Bird flu is spreading again, now that wild water fowl — geese, ducks and cranes — have begun their seasonal migrations.
In poultry, bird flu cases are spiking earlier than expected.
A scenario in which a person gets infected with both H5N1 and seasonal flu at the same time could be problematic because it would enable the bird flu virus to more easily rearrange its genetic code to suit humans.
The biotech company Moderna was developing a bird flu vaccine that used the mRNA platform, but the Department of Health and Human Services canceled its grant.
The summer was calm for bird flu: officials took a break, egg prices slightly decreased, and fewer sick poultry flocks were killed on farms.
“It was beautiful,” said Shauna Voss, the Minnesota Board of Animal Health’s assistant director.
But it was short-lived.
Since wild water birds, including geese, ducks, and cranes, have started their seasonal migrations, bird flu is once again spreading. The birds exchange viruses and congregate at lakes and ponds along the way.
Bird flu cases in poultry are peaking earlier than anticipated. Since flock members tested positive for the H5N1 virus, more than 4 million poultry birds have been killed in the past month in states like Minnesota and Iowa. The pattern is consistent with an increase in infections found in northern states’ wild birds.
In previous years, cases have usually increased in the fall, so some state officials are preparing for a difficult fall.
“We had our first confirmed positive last week,” stated Mike Naig, the secretary of agriculture for Iowa. The case took place on a Calhoun County turkey farm. Thus, the question for us is what kind of fall we can expect and how widespread it will be. “.”.
He added that it’s too soon to predict how the outbreaks will affect egg prices.
“We’ll just have to wait and see,” is the only truthful response. “I wish I could give you more,” Naig remarked.
Bird flu infections have increased for the fourth fall in a row, which suggests the virus is spreading among wild birds and may pose a persistent risk to poultry.
It isn’t going away. Voss remarked, “It appears to be fairly embedded.”.
There is a chance that the virus will find a way to easily infect people as it spreads. If that becomes an issue, some experts worry that scientists’ ability to quickly develop a new vaccine may be hampered by the Trump administration’s cuts to mRNA research. However, there is currently little risk to people’s health.
Authorities, wildlife specialists, and virologists are in a watch-and-wait situation as fall approaches.
According to Declan Schroeder, an associate professor of virology at the College of Veterinary Medicine at the University of Minnesota, “it’s an interesting time.”. Everyone is eagerly anticipating what will happen. “.”.
For the first time, avian influenza was found in a U. A. commercial flock in February 2022, following a period of time spent in wild birds. As of this summer, over 175 million poultry birds had been culled or killed due to the virus, which is nearly always fatal. Many changes to farm practices and milk testing were made after researchers discovered, to their surprise, two years ago that bird flu had spread to dairy cows and was present in raw, unpasteurized milk.
There have been at least 70 cases, primarily among farmworkers who have had close contact with cows or birds. One person lost their life.
Scientists believe there are three main ways that wild birds can infect poultry farms: by direct contact, by contaminating feed, or by workers bringing contaminated materials into barns. Migration season can be a powerful catalyst because of this.
According to Michael Ward, a professor of natural resources and environmental sciences at the University of Illinois who specializes in migration, “if you have one sick bird that moves over an area and infects some others, the math suggests it’s going to spread really fast.”.
Birds are congregating and sharing space due to habitat constraints, Ward continued, increasing the likelihood of viral spread. Wetland habitat in Illinois has decreased as a result of the state’s drought.
“This combination is ideal for the emergence of disease,” Ward stated.
When asked how the federal government intends to address the increase in bird flu cases, the U.S. officials responded. A. The Department of Agriculture cited a five-pronged plan it unveiled in February, which included $100 million for studies into novel biosecurity techniques and the creation of poultry vaccines.
Poultry birds are already being vaccinated in nations like France, but the USDA stated it is still assessing whether the U.S. S. ought to do. Since the agency has not authorized such a vaccine, its introduction would have an impact on U. A. exported goods.
Naig, who is in Iowa, stated, “We firmly think that an efficient vaccination plan would be very beneficial for the egg and turkey producers, but we recognize that it must be done carefully to ensure there is no impact on other markets.”. “USDA has given this some attention, and we’re currently waiting to see what that vaccination approach might entail. “.”.
Scientists have long been worried that the bird flu virus may eventually become capable of efficiently spreading from person to person. Dr. Peter Chin-Hong, a medical professor at the University of California, San Francisco who specializes in infectious diseases, advised people to take preventative measures against H5N1 and seasonal flu, even though the risk to humans is currently low.
“Get vaccinated against this flu. Avoid consuming raw milk and unpasteurized cheese, especially during cases that are in circulation. Chin-Hong advised against letting your cats eat outside during the migratory bird season.
When a person contracts both seasonal flu and H5N1 at the same time, it could be problematic because it would allow the bird flu virus to more easily modify its genetic code to fit humans.
Chin-Hong regrets the departure of the Centers for Disease Control and Prevention’s H5N1 coordination calls with healthcare providers this spring. He disagrees with the Trump administration’s decision to stop funding mRNA vaccine research and hopes the agency will start making calls again. The Department of Health and Human Services terminated the grant that Moderna, a biotech company, was using to develop a bird flu vaccine using the mRNA platform.
A request for comment was not answered by the CDC.
