- Why in news
- On 27 January 2026 the Health Ministry, citing NCDC reports, said only two Nipah cases have been confirmed in West Bengal since December. It called media figures speculative and said 196 traced contacts tested negative.
- What it is
- Nipah virus disease is a zoonotic infection caused by the Nipah virus, a paramyxovirus of the genus Henipavirus. Fruit bats of the genus Pteropus (flying foxes) are its natural reservoir. It spreads from bats or pigs to people, through contaminated raw date palm sap or fruit, and from person to person through close contact. It causes fever and brain inflammation (encephalitis), and no licensed vaccine or specific cure exists.
- Contact tracing
- 196 contacts were traced, monitored and tested. All were asymptomatic and negative.
- Who reported
- The National Centre for Disease Control (NCDC) supplied the case reports. The Centre worked with the West Bengal government on the response.
- Reservoir host
- Fruit bats of the genus Pteropus are the natural host of the Nipah virus.
- Transmission
- Humans are infected through bats, infected pigs, contaminated food such as raw date palm sap, and close contact with infected people.
- Treatment
- There is no approved vaccine or specific antiviral. Care is supportive.
Don’t confuse with Nipah vs. Hendra: Both are henipaviruses carried by fruit bats. Hendra mainly affects horses in Australia, and Nipah is the one that has caused outbreaks in India, Bangladesh and Malaysia.
Don’t confuse with Nipah vs. COVID-19: Nipah is a zoonotic henipavirus with a high fatality rate but limited human spread. COVID-19 is caused by a coronavirus and spreads widely through the air.
Science and technology: 57 Prelims questions since 2013; most test the concept behind the news, not the news itself. In Mains, 12 news-triggered questions.
Why it matters
- Quick contact tracing and testing contained the cases, showing the value of surveillance under the One Health approach.
- Official clarification curbs panic and misinformation during an outbreak.
Problems
- Nipah has a high case fatality rate and no licensed vaccine or antiviral.
- Bat reservoirs and seasonal sap consumption make spillover recurrent, and early detection in rural areas is difficult.
Way forward
- Strengthen zoonotic surveillance, lab capacity and the One Health link between human, animal and wildlife agencies.
- Speed up vaccine and therapeutic research, and run public awareness on raw sap and fallen fruit.
Put in your answer
Official communication: The ministry urged reliance on verified official information, an example of managing misinformation during outbreaks.
- 2025Prelims Q48Statements on monoclonal antibodies, including their use against Nipah virus
- 2021Prelims Q65Recombinant vector vaccines: genetic engineering and bacteria/viruses as vectors
- 2021Prelims Q70Adenovirus and retrovirus genome types and diseases they cause
UPSC’s own questions that come close to this issue, from our Prelims and Mains banks.
No practice question for this one; the card may still help an answer. Why: Disease outbreak clarification; the virus is a lasting topic, though Prelims tests concepts and no new provision is here.
Worth revising until Prelims 2027: most news questions come within two years of the event.