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Observium Nipah virus

Nipah virus Henipavirus nipahense

Nipah virus infection is a zoonotic viral disease caused by the Nipah virus. Results of human contraction range from asymptomatic infection to influenza-like illness or even fatal encephalitis. Initial signs and symptoms, if any, include fever, headache, myalgia, vomiting and signs of respiratory illness such as coughing, a sore throat and difficulty breathing. In severe cases patients may develop encephalitis, which can lead to dizziness, drowsiness, altered consciousness and seizures. Patients with these symptoms can fall into a coma within a day or two.

16WHO outbreaks
365Cases reported
90Deaths
5Countries affected

Countries with active outbreaks

  • Bangladesh — 7 events, 331 cases, 60 deaths
  • India — 6 events, 34 cases, 30 deaths
  • Malaysia — 1 events
  • Japan — 1 events
  • United States — 1 events

Recent events

  • 2026-02-06T19:00:00Z · Bangladesh — Nipah virus infection - Bangladesh · 35 cases
  • 2026-01-30T19:00:00Z · India — Nipah virus disease - India
  • 2025-09-18T18:00:00Z · Bangladesh — Nipah virus infection - Bangladesh · 96 cases
  • 2025-08-06T10:48:42Z · India — Nipah Virus Infection - India
  • 2024-02-27T19:00:22Z · Bangladesh — Nipah virus infection - Bangladesh · 91 cases
  • 2023-10-03T18:00:00Z · India — Nipah virus infection - India
  • 2023-02-17T19:00:00Z · Bangladesh — Nipah virus infection - Bangladesh · 15 cases · 11 deaths
  • 2021-09-24T16:18:00Z · India — Nipah virus disease - India

Frequently asked questions

What is Nipah virus?

Nipah virus is an infectious disease caused by Henipavirus nipahense. Nipah virus infection is a zoonotic viral disease caused by the Nipah virus. Results of human contraction range from asymptomatic infection to influenza-like illness or even fatal encephalitis. Initial signs and symptoms, if any, include fever, headache, myalgia, vomiting and signs of respiratory illness such as coughing, a sore throat and difficulty breathing. In severe cases patients may develop

How is Nipah virus transmitted?

The main transmission routes of Nipah virus are: zoonotic (fruit bats), contact (raw date palm sap), person-to-person.

Where is Nipah virus endemic?

Nipah virus is endemic in the following regions: South Asia, Southeast Asia.

What is the case fatality rate of Nipah virus?

The typical case fatality rate (CFR) of Nipah virus is 40–75%.

How many active Nipah virus outbreaks worldwide?

Currently 16 active WHO outbreaks reported, with 365 cases and 90 deaths in the surveillance window.

Official sources

Observium aggregates real-time data from authoritative sources: WHO Disease Outbreak News, CDC NNDSS, ECDC, Europe PMC, Italian Ministry of Health, ISS, UKHSA, RIVM, RKI, BAG, ISCIII, NICD, and 20+ national sources plus Google News.

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