India, Feb. 6 -- More than 1,000 crows died across Chennai in late January and early February, with tests confirming the presence of the H5N1 avian influenza virus

The deaths have triggered statewide surveillance in Tamil Nadu to prevent the virus spreading to poultry or humans

Authorities say no human infections have been reported and transmission remains rare, but monitoring has been intensified

Officials point to wildlife mortality as an early warning signal, allowing intervention before commercial poultry is affected

Avian influenza has resurfaced in Tamil Nadu after the deaths of more than a thousand crows in Chennai, prompting authorities to step up surveillance to prevent the virus from spreading to poultry or humans.

Between ...