The World Health Organization has reported a significant increase in cases of H5N1 Bird Flu. The number of dairy herds affected by the virus has nearly tripled to 92 in 12 countries.
Human cases have also risen, with three infections reported, up from one previously. Additionally, over 500 people are now being monitored for potential exposure, more than double the previous number.
Director-General of WHO, Dr. Tedros Ghebreyesus, shared this information on Wednesday during an online media conference.
Dr. Ghebreyesus noted that since 2003, there have been 893 reported human infections of H5N1, including 11 so far in 2024. These cases include five in Cambodia, three in the United States, and one each in Australia, China, and Vietnam.
Despite the increase in cases, the virus has not shown signs of spreading easily among humans.
Dr. Ghebreyesus emphasized, “That remains the case, which is why, at this time, WHO continues to assess the risk to public health as low.”
He explained that in recent years, H5N1 has spread widely among wild birds, poultry, and both land and marine mammals across several continents. WHO recommends that anyone working with infected animals in any country should use personal protective equipment and undergo regular testing and follow-up care.
“Follow-up, testing, and care of people exposed to the virus should continue systematically,” Dr. Ghebreyesus said. “Early medical care and support, and thorough and timely investigation of every human infection is essential to evaluate and interrupt potential onward transmission between humans.”
WHO is monitoring multiple avian flu viruses in humans through the Global Influenza Surveillance and Response System. Dr. Ghebreyesus stressed the importance of enhanced surveillance of flu viruses among animals globally to quickly detect any changes that could pose a greater threat to humans.
“These systems are only as good as the timely detection and the sharing of viruses and information,” he stated. “Collaboration, communication, and information sharing between the animal and human health sectors is essential in all countries. This is the meaning of one health.”
Human infections with the avian influenza virus can cause a range of diseases, from mild upper respiratory tract infections to severe and potentially fatal conditions. Symptoms can include conjunctivitis, gastrointestinal issues, encephalitis, and encephalopathy.
The WHO continues to urge vigilance and cooperation between health sectors to manage and mitigate the spread of H5N1 Bird Flu.
