Nipah Virus

First identified: 1998‑99, Kampung Sungai Nipah, Malaysia
Family & Genus: Paramyxoviridae family, Henipavirus genus
Natural reservoir: Fruit bats (family Pteropodidae)
Intermediate host: Pigs
Biosafety level: BSL‑4 pathogen
Transmission: Animal‑to‑human, human‑to‑human (respiratory droplets, close contact)
Symptoms: Fever, myalgia, sore throat, respiratory distress → acute encephalitis, convulsions, coma, death
Case‑fatality rate (CFR): ~91% in 2018 Kerala outbreak; reduced to ~33% (2023‑25) with monoclonal antibodies & Remdesivir
India outbreaks: West Bengal (2007, 2026 suspected), Kerala (2018, 2023, 2025)
Diagnostic tools: RT‑PCR, ELISA, serum neutralisation, histopathology, virus isolation (in BSL‑4 labs)
Treatment: Supportive care, isolation; experimental use of monoclonal antibodies & antivirals (Remdesivir)

Nipah virus (NiV) is a zoonotic disease with a One Health dimension, linking wildlife, livestock, and human health.
The 1998‑99 Malaysian outbreak caused 105 deaths and highlighted the role of pig farms as amplifying hosts.
Subsequent outbreaks in Bangladesh (2001‑present) demonstrated direct bat‑to‑human transmission via contaminated date‑palm sap.
India's experience, especially in Kerala, has prompted the establishment of high‑containment labs and state‑central rapid response teams.

Public‑health preparedness: The suspected cases in West Bengal triggered an urgent state‑central response, testing India's National Centre for Disease Control (NCDC) and Integrated Disease Surveillance Programme (IDSP) mechanisms.
Policy implications: Need for strengthening One Health coordination, wildlife surveillance, and biosafety infrastructure.
International obligations: Reporting under the International Health Regulations (2005); potential for cross‑border spread necessitates regional cooperation.
Research & development: Absence of licensed vaccine underscores the importance of R&D incentives, public‑private partnerships, and fast‑track clinical trials.
Healthcare worker safety: Emphasizes infection‑control protocols, PPE availability, and training for BSL‑4 pathogens.

Article 21 – Right to life and health; state duty to protect citizens from high‑risk pathogens.
National Health Policy 2017 – Emphasises surveillance, early warning systems, and One Health approach.
The Epidemic Diseases Act, 1897 – Provides legal framework for containment measures.
The Indian Penal Code (Section 269‑270) – Addresses negligent spread of infectious disease.

World Health Organization (WHO) fact sheets on Nipah virus.
Ministry of Health & Family Welfare (MoHFW) guidelines on zoonotic disease outbreaks.
NCDC operational protocols for BSL‑4 pathogens.