India notified the World Health Organization (WHO) on January 26, 2026, of two confirmed Nipah virus disease (NiVD) cases in West Bengal state, with laboratory confirmation received on January 13, 2026. Both confirmed cases were among healthcare workers — highlighting occupational risks in managing emerging infectious diseases. This represents the third Nipah virus outbreak reported in West Bengal, adding to a growing pattern of Nipah recurrence in India. The WHO assessed the overall risk as moderate at the sub-national (state) level and low at the national, regional, and global levels. As of the notification date, 196 contacts linked to the confirmed cases had been identified, traced, monitored, and tested — all contact tests returned negative results. Nipah virus (NiV) is a zoonotic virus — it spreads from animals (primarily fruit bats of the Pteropus genus, also known as flying foxes) to humans, and can also spread between humans through direct contact with infected bodily fluids. Nipah has a case fatality rate of 40-75%, making it one of the most dangerous known pathogens with pandemic potential. India has experienced multiple Nipah outbreaks since 2001 — in West Bengal (2001, 2007), and Kerala (2018, 2019, 2021, 2023, and July 2025 in Palakkad and Malappuram districts). There are no approved vaccines or treatments for Nipah as of 2026. The MoNaFO-77 monoclonal antibody treatment is under trial. The National Centre for Disease Control (NCDC) under MoHFW is the nodal agency for Nipah surveillance in India. The outbreak underscores the need for robust One Health frameworks — integrating human, animal, and environmental health — which is particularly relevant for Rajasthan given its dense human-livestock interface in rural areas.
Nipah Virus Outbreak in West Bengal: India Notifies WHO of Two Confirmed Cases Among Healthcare Workers; Risk Assessed as Moderate at Sub-National Level
India notified the World Health Organization (WHO) on January 26, 2026, of two confirmed Nipah virus disease (NiVD) cases in West Bengal state, with laboratory confirmation received on January 13, 2026. Both confirmed cases were among healthcare workers — highlighting occupational risks in managing emerging infectious diseases. This represents the third Nipah virus outbreak reported in West Bengal, adding to a growing pattern of Nipah recurrence in India. The WHO assessed the overall risk as moderate at the sub-national (state) level and low at the national, regional, and global levels. As of the notification date, 196 contacts linked to the confirmed cases had been identified, traced, monitored, and tested — all contact tests returned negative results. Nipah virus (NiV) is a zoonotic virus — it spreads from animals (primarily fruit bats of the Pteropus genus, also known as flying foxes) to humans, and can also spread between humans through direct contact with infected bodily fluids. Nipah has a case fatality rate of 40-75%, making it one of the most dangerous known pathogens with pandemic potential. India has experienced multiple Nipah outbreaks since 2001 — in West Bengal (2001, 2007), and Kerala (2018, 2019, 2021, 2023, and July 2025 in Palakkad and Malappuram districts). There are no approved vaccines or treatments for Nipah as of 2026. The MoNaFO-77 monoclonal antibody treatment is under trial. The National Centre for Disease Control (NCDC) under MoHFW is the nodal agency for Nipah surveillance in India. The outbreak underscores the need for robust One Health frameworks — integrating human, animal, and environmental health — which is particularly relevant for Rajasthan given its dense human-livestock interface in rural areas.
Key facts
- India notified WHO on January 26, 2026 of two confirmed Nipah virus cases in West Bengal.
- Both confirmed cases were healthcare workers — highlighting occupational infection risks.
- WHO assessed risk as moderate at sub-national level and low at national and global levels.
- Nipah virus has a case fatality rate of 40-75% with no approved vaccines or treatments as of 2026.
- India has experienced multiple Nipah outbreaks since 2001 in West Bengal and Kerala.
- NCDC under MoHFW is the nodal agency for Nipah surveillance in India.
Mains angle
Q: Discuss the challenges posed by zoonotic disease outbreaks like Nipah virus in India, and evaluate the role of surveillance frameworks and One Health approaches in containing such emerging infections.
Answer (50 words):
India notified the WHO on January 26, 2026 of two confirmed Nipah virus cases among West Bengal healthcare workers — the state's third outbreak since 2001. With 40-75% fatality rate, no approved vaccine, and 196 contacts traced negative, containment relies on NCDC surveillance, contact isolation, and One Health frameworks integrating human-animal-environmental health.
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Nipah virus, a zoonotic pathogen, primarily spreads from which animal reservoir to humans?
Nipah virus spreads primarily from fruit bats of the Pteropus genus (flying foxes) to humans, and can also spread between humans through direct contact with infected bodily fluids.
Source: WHO Disease Outbreak News / Al Jazeera / Washington Post / CDC Australia / NCDC MoHFW
Frequently asked questions
What is Nipah virus and why is its case fatality rate alarming?
Nipah virus (NiV) is a zoonotic paramyxovirus transmitted primarily from fruit bats (Pteropus species) to humans, with human-to-human transmission also documented. Its case fatality rate of 40–75% makes it one of the most lethal emerging pathogens. As of 2026, there are no WHO-approved vaccines or specific antiviral treatments, which is why WHO lists it as a priority pathogen requiring urgent research and development.
When and how did India notify WHO about the 2026 West Bengal Nipah outbreak?
India notified the World Health Organization on January 26, 2026 about two confirmed Nipah virus disease (NiVD) cases in West Bengal. Laboratory confirmation had been received on January 13, 2026. Both confirmed cases were healthcare workers, highlighting occupational exposure risks in managing emerging infectious diseases.
What risk assessment did WHO assign to the 2026 West Bengal Nipah outbreak?
WHO assessed the overall risk at the sub-national (state) level as moderate, while at the national and global levels the risk was assessed as low. This assessment was based on the limited number of confirmed cases, the containment of identified contacts (196 contacts traced, all tested negative), and the absence of community-level spread.
Which agency is India's nodal body for Nipah virus surveillance and what ministry oversees it?
The National Centre for Disease Control (NCDC), under the Ministry of Health and Family Welfare (MoHFW), is the nodal agency for Nipah virus surveillance in India. NCDC coordinates outbreak response, contact tracing, and laboratory confirmation in coordination with state health departments and WHO.
What is the pattern of Nipah virus outbreaks in India and why is West Bengal significant?
India has experienced multiple Nipah outbreaks since 2001. The first outbreak was in Siliguri, West Bengal in 2001, followed by Nadia, West Bengal in 2007. Kerala witnessed outbreaks in 2018, 2019, and 2023. The 2026 West Bengal outbreak is the third Nipah outbreak recorded in the state, establishing a geographic pattern of recurrence that demands sustained surveillance infrastructure in both West Bengal and Kerala.
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