Two Confirmed Cases in West Bengal
Indian health authorities have confirmed two cases of Nipah virus infection in the North 24 Parganas district of West Bengal. Both patients are 25-year-old nurses who worked at the same private hospital in Barasat, where they developed symptoms in late December 2025 and were subsequently placed in isolation early this month.
Following identification of the cases, health teams conducted extensive contact tracing and monitoring. A total of 196 individuals who had contact with the infected nurses were traced, monitored and tested, and all have so far tested negative and remain asymptomatic.
WHO Says Spread Risk Low, No Travel or Trade Restrictions Needed
The World Health Organization (WHO) has reviewed the situation and stated that the risk of the Nipah virus spreading further within India or beyond its borders remains low based on the current evidence. According to the WHO, there is no need for travel or trade restrictions related to the outbreak at this time.
The global health agency noted that the two cases are confined to a single district, with no reported travel by the patients during their symptomatic period, and no evidence yet of sustained human-to-human transmission.
Public Health Response and Containment Efforts
Indian authorities, in coordination with the WHO, have activated a comprehensive public health response, including surveillance, laboratory testing and field investigations, to prevent further spread. The Union Health Ministry has also urged the public to rely on verified information and avoid speculation, noting that misleading reports about additional cases have circulated in some media.
Although other Asian countries increased health screenings at airports and border points following reports of the outbreak, the WHO assessment supports that the overall situation is currently under control.
Understanding Nipah Virus and Transmission
The Nipah virus is a zoonotic virus, typically transmitted from animals (especially fruit bats) to humans, and can also spread through direct contact with infected individuals or contaminated food. It is known to cause severe illness including fever, neurological complications and encephalitis, and has historically exhibited a high fatality rate in some outbreaks.
There is no approved vaccine or specific antiviral treatment for Nipah virus disease, and medical care focuses on supportive treatment and infection control measures.
Outlook and Precautions
WHO’s latest risk assessment considers the outbreak’s impact moderate at a local level in West Bengal, due to natural reservoirs of the virus in bats near the India–Bangladesh border, but low at the national, regional and global level.
Health authorities continue to monitor the situation closely, and officials recommend standard precautions such as avoiding contact with bats and handling of potentially contaminated food, practicing hand hygiene, and reporting any symptoms consistent with infection early to medical professionals.