Nipah alert in West Bengal: Two nurses infected; surveillance and quarantine stepped up

Health authorities in India have confirmed two Nipah virus cases in West Bengal, triggering enhanced surveillance and containment measures. The infections were reported among two nurses working at a private hospital near Kolkata, with one of the nurses said to be in critical condition.

Officials believe the most likely source of infection was a patient previously admitted to the same hospital with severe respiratory symptoms, who later died before definitive testing could be completed. The patient is being treated as a suspected index case as investigators trace contacts and reconstruct exposure pathways.

Containment steps include testing of people connected to the suspected cluster, identification of high-risk contacts and quarantine protocols. As of 20 January, multiple samples had been tested and a set of high-risk contacts were placed under isolation, with officials monitoring for symptoms and retesting at the end of quarantine windows.

Nipah is a zoonotic disease, meaning it can spread from animals to humans and also between people. Because the infection can cause severe respiratory illness and encephalitis, authorities typically treat even small clusters with urgency to reduce the chance of wider transmission.

Investigators have also expanded environmental and animal-side surveillance in the region, including efforts to collect samples from bats, which are known reservoirs for the virus. Public health teams are simultaneously reviewing infection-control procedures and exposure points within the hospital setting.

Officials have advised basic precautions such as avoiding contact with bats and sick animals, washing fruits and maintaining protective measures when handling animals, alongside standard respiratory hygiene. Authorities say the situation is being handled as a priority, with the goal of rapidly breaking any chains of transmission.