In a mysterious and tragic event, 47 tigers, along with three lions and a panther, have died at two zoos in southern Vietnam, the Vietnam News Agency reported on October 2. The deaths, which occurred over the past few months at My Quynh Safari Park and Vuon Xoai Zoo in Dong Nai, have been linked to the H5N1 bird flu virus.
Animal deaths linked to H5N1 virus
The National Centre for Animal Health Diagnosis confirmed that the cause of death was the H5N1 type A virus, a strain of bird flu. Although H5N1 has primarily affected birds in the past, recent outbreaks among mammals, including large predators like tigers, have raised concerns globally.
None of the zoo staff members who were in contact with the animals reported any symptoms of illness, despite the highly contagious nature of the virus.
Rising bird flu outbreaks in mammals
The World Health Organization (WHO) has reported an increase in outbreaks of bird flu among mammals since 2022. This includes a significant number of cases in domestic cats in the United States and workers in Colorado poultry warehouses.
There are growing fears that the spread of H5N1 could lead to more severe consequences for humans. While the virus can cause mild symptoms in some cases, it has also been known to be fatal.
Tigers in captivity in Vietnam
At the end of 2023, Vietnam had 385 tigers living in captivity, according to Education for Nature Vietnam, a wildlife organization. These animals are mostly kept at privately owned farms and zoos, while some remain in state-owned facilities.
The recent tragedy is particularly devastating given the already limited tiger population in captivity.
Global concerns over bird flu
Globally, the rising incidence of H5N1 among mammals has caused concern. In March, Vietnam recorded a human death from the virus, highlighting the potential for the virus to cross species barriers.
Meanwhile, efforts to combat the virus are underway. Moderna recently signed a $176 million deal with the U.S. to develop a bird flu vaccine, as fears of a potential pandemic continue to mount.
The events at My Quynh Safari Park and Vuon Xoai Zoo are the latest in a series of troubling reports, underscoring the need for heightened monitoring and control measures to prevent further outbreaks.
