Delhi zoo shuts doors to visitors after Bird Flu detection

The National Zoological Park in Delhi will remain closed for visitors temporarily from Saturday till further order as two samples have tested positive for H5N1 Avian Influenza Virus.

According to a statement issued by the Zoo authority, the step has been taken to ensure the safety of visitors and to intensify surveillance of the disease. The statement read, “The National Zoological Park shall remain closed for visitors temporarily from 30.08.2025 till further order as two of samples have been tested positive for H5N1 Avian Influenza Virus. However, all the essential services for management of animals and birds shall remain operative. All Supervisors, Officials and Staffs are directed to follow the protocol of Avian Influenza.”

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What is H5N1 Avian influenza?

H5N1 is one of several influenza viruses that causes a highly infectious respiratory disease in birds called avian influenza (or “bird flu”). Infections in mammals, including humans, have also been documented.

The goose/Guangdong-lineage of H5N1 avian influenza viruses first emerged in 1996 and has been causing outbreaks in birds since then.

In humans, H5N1 infection can cause from mild illness to severe disease, and in some cases may prove fatal. Reported symptoms are mainly respiratory, though conjunctivitis and other non-respiratory signs have also been observed. Notably, there have been instances where individuals exposed to infected animals or contaminated environments tested positive for the virus but remained asymptomatic.

The shutting down of the zoo is a precautionary measure to safeguard public health and will remain in place until further notice.