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Spring has sprung, and with it so has the bird flu. A viral strain of avian influenza arrived in the United States in early 2022 and has since affected more than 58 million commercial poultry and backyard flocks, according to the CDC. According to Reuters, so many birds died from the disease in 2022 that it became it the worst avian-flu outbreak in US history — and it doesn’t seem to be stopping any time soon.
After experiencing a brief decline in cases, The Raptor Center at the University of Minnesota confirmed its first case of the bird flu since January on March 25, per KSTP News in Minneapolis. “It’s just a matter of when it would have returned,” Michael Crusan, public information officer with the Minnesota Board of Animal Health said in an interview with the station.
What’s more, health officials confirmed the death of a pet dog due to bird flu in Ontario, Canada on April 4, according to a statement from the Canadian government — a reminder to keep your pets away from dead wild birds and refrain from feeding them any raw meat from game bird and poultry.
The avian flu has spread nearly worldwide, also impacting animals in Europe, Asia, and Africa, Reuters reports, while driving a spike in the price of eggs in the US (retail egg costs have more than doubled in a year, according to the US Bureau of Labor Statistics).
Avian flu predominantly impacts wild birds (especially waterfowl) and poultry (e.g. chickens, turkeys, pheasants, quail, domestic ducks, geese, and guinea fowl), according to the USDA. Direct exposure of farmed birds to wild birds (which are permanently infected) is a likely transmission route of the virus, according to the World Organisation for Animal Health. With consumers increasingly choosing free-range products — birds allowed time to roam instead of being cooped up inside — it heightens the risk of meeting infected wildlife, per Fortune.
While humans are not typically infected by the virus, “we cannot assume that will remain the case,” Tedros Adhanom Ghebreyesus, World Health Organization (WHO) director general, said during a February press conference. Experts say we should be aware of a few key pieces of information about this type of flu. Here’s everything you need to know.
What Is Bird Flu?
“Avian influenza or bird flu refers to the disease caused by infection with avian (bird) influenza (flu) Type A viruses,” according to the CDC.
Bird flu is deadly and contagious, and it naturally spreads “among wild aquatic birds worldwide and can infect domestic poultry and other bird and animal species,” per the CDC. The virus is transmitted through bird saliva, nasal secretions, and feces. Birds can also become infected if they make contact with a surface that’s been contaminated with the virus from another infected bird.
Can Humans Get Bird Flu?
Infectious-disease expert Amesh Adalja, MD, a senior scholar at the Johns Hopkins Center For Health Security, tells POPSUGAR, “There is no current threat from bird flu to humans.” But that’s not to say that it couldn’t become a threat in the future. “We must prepare for any change in the status quo,” Ghebreyesus said during the WHO press briefing.
After all, there have been a few instances in world history in which the virus has spread among humans. “The concern is that some strains of avian influenza will have or develop the capacity to spread efficiently between humans in the manner of the 1918 H1N1 influenza pandemic, which was an avian-origin influenza virus,” Dr. Adalja says. An estimated 500 million people, or one-third of the world’s population, became infected with the virus and roughly 50 million people worldwide died from it, per the CDC. In April 2022, the US reported its first human case of bird flu, according to NBC News.
Still, Dr. Adalja notes that when it comes to bird flu, “most of the strains are very constrained in their ability to infect humans, and infections are largely restricted to those who have close contact with bird species such as poultry.”
What Are Bird-Flu Symptoms in Chickens and Other Birds?
If you’re concerned that your bird or flock has been impacted by avian flu, here are a few signs you should look out for, according to the Department of Labor’s Occupational Safety and Health Administration (OSHA):
- Lack of energy, appetite, and coordination
- Purple discoloration or swelling of various body parts
- Diarrhea
- Nasal discharge
- Coughing
- Sneezing
- Reduced egg production and/or soft-shelled or misshapen eggs
- Sudden death
Are There Signs of Bird Flu in Humans?
Again, the risk of humans being infected with bird flu remains low. But symptoms in humans can run the gamut from red eyes or mild flulike upper-respiratory symptoms to fever, shortness of breath, body aches, and even pneumonia, per the CDC.
If you’ve come in contact with infected birds and become sick within 10 days of exposure, the CDC advises that you isolate at home and notify the local or state health department. Lab testing is needed to confirm a diagnosis. Treatment typically includes antiviral medicine, such as oseltamivir (Tamiflu) or zanamivir (Relenza), according to the Mayo Clinic.
The best prevention method against bird flu is to avoid exposure altogether. A few preventative suggestions from the CDC include:
- Avoid direct contact with wild birds, and observe them from a distance.
- Avoid unprotected contact with domestic birds that look sick or have died.
- Do not touch surfaces that may be contaminated with saliva, mucous, or feces from wild or domestic birds.
- If you must handle sick birds because of your job, use safety measures like gloves, eye protection, and frequent handwashing.
Should You Stop Eating Poultry and Eggs?
No. “This is not something transmitted by ingestion of poultry or eggs,” Dr. Adalja says. Avian influenza is not a food-borne illness, meaning poultry and eggs that are properly prepared and cooked are safe to eat, per the USDA. Proper food-handling recommendations include cooking poultry to an internal temperature of 165°F and washing your hands with warm water and soap before and after handling poultry and eggs.
Another downside to this outbreak? While eating these foods may not be a problem, buying them could cost you. The price of eggs has skyrocketed due to the avian flu, so much so that the average cost for a dozen large Grade A eggs in January 2023 was $4.82, according to the US Bureau of Labor Statistics. In comparison, in January 2022, eggs were only $1.93 a dozen.