Questions and answers on avian influenza A(H5N1)

July 2023 (PAHO/WHO)—In January this year, the Pan American Health Organization (PAHO) warned about outbreaks of highly pathogenic avian influenza in birds in countries of the Americas. For the first time, a human case of avian influenza A (H5N1) was also confirmed in a Latin American country. Since then, 16 countries have reported cases in birds and other animals and, until the first week of July 2023, two countries have confirmed human infections.