The FDA recommends cooking eggs thoroughly and avoiding raw milk as bird flu infections spread in poultry and dairy cattle, leading to a rise in human cases.
Even though the general risk of catching bird flu is low, the FDA advises cooking eggs to a safe temperature and avoiding raw milk.As bird flu infections rise in dairy cattle and chickens, human cases are ticking up too, leaving many people to wonder whether they might be at risk from this recently arrived virus.
There have been confirmed in the US this year, according to the US Centers for Disease Control and Prevention, and all but three have been in people who work on poultry or dairy farms.As the name suggests, avian influenza viruses prefer to infect birds. They break into cells by latching onto sugars that stick up from their surfaces called sialic acids. H5N1, the bird flu virus behind the ongoing outbreak in the US, has really only demonstrated an affinity for the types of sialic acid receptors that are most plentiful in the respiratory tracts of birds. But flu viruses can also mutate quickly, and since 2022, H5N1 has been infecting a growing variety of mammals, including dairy cattle. That has scientists on alert because the more it circulates in animals, the better it gets at finding new hosts.A study published last week in the journal Science showed that just one key change to the virus’ genetic material would allow it to attach to the kinds of sialic acids that are most common in the nose and lungs of people. But it’s nearly impossible to predict when that could happen — or if it ever will.When humans have become infected with bird flu, it’s almost always been through contact with infected animals. All but one of these so-called spillover infections have been mild. The United States’ first severe case was announced this week in a person in Louisiana who remains hospitalized in critical condition. The CDC said Wednesday the person was exposed to sick and dead birds on their property, not from commercial poultry. No one who has gotten H5N1 in the US is known to have given the infection to anyone els
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