Update on CDC’s Avian Influenza A(H5N1) “Bird Flu” Response Activities June 7, 2024

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Includes info on an updated technical report, a new study in ferrets, and seroprevalence data to date

June 7, 2024

	Influenza (Flu) 2023 - 2024 Flu Season

www.cdc.gov/flu

Update on CDC’s Avian Influenza A(H5N1) “Bird Flu” Response Activities CDC’s response to the outbreak of A(H5N1) bird flu in dairy cows most recently includes posting an updated A(H5N1) technical report, results of studies in ferrets infected with the virus from the human case in Texas, a historical summary of A(H5N1) seroprevalence data; an update on efforts to sequence the virus from the second human case from Michigan; and continued support for states monitoring persons with relevant exposure history. Learn More

CDC Reports Results of Ferret Studies using H5N1 Bird Flu Virus From A CDC spotlight summarizes the findings of a study of the effects of A/Texas/37/2024 H5N1 virus on ferrets, often used as a model for humans. The virus was lethal in ferrets and spread efficiently between ferrets in direct contact but did not spread efficiently via respiratory droplets. These findings suggest this virus could cause serious illness in people but would need to undergo genetic changes to spread more easily via respiratory droplets, like seasonal flu does. The findings are not surprising and do not change CDC‘s risk assessment for most people, which remains low. Learn More

H5N1 Bird Flu Communications Materials Now Available to Partners CDC’s bird flu communication resources now include info in English, Spanish and K’iche’ aimed at farmworkers and others with exposure to infected or potentially infected cows. The materials include social media posts and print ready posters illustrating what is known about how the virus spreads, how to put on and safely remove personal protective equipment, and more.           Learn More

	X @CDCFlu CDC plans to conduct enhanced, nationwide summer monitoring to help detect even rare human cases of #H5N1 in the community, in addition to raising awareness about H5N1 via targeted outreach to farmworkers in affected communities. More #birdflu updates: https://www.cdc.gov/flu/avianflu/spotlights/2023-2024/h5n1-response-06072024.html

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