Taiwan’s Centers for Disease Control (CDC) has announced its intention to list **Nipah virus infection** as a Category 5 notifiable disease. This decision follows a reported outbreak in India and marks a significant escalation from the “priority surveillance” status the virus has held in Taiwan since 2018.

Under the Category 5 designation, the Nipah virus is classified as an emerging or rare infection with major public health risks. This status mandates **immediate reporting** by healthcare providers and allows the government to implement special control measures, including mandatory quarantines and specific laboratory protocols.

The Situation in West Bengal and Kerala

The policy shift comes as India struggles to contain a new cluster in the eastern state of **West Bengal**, where five infections were confirmed as of January 19, 2026. CDC Deputy Director-General **Lin Ming-cheng** (林明誠) noted that the outbreak has already impacted healthcare workers, including doctors and nurses.

• Travel Alerts: Taiwan is maintaining a Level 2 “yellow” alert for Kerala state, a known Nipah hotspot.
• Surveillance: While no warning is currently in place for West Bengal, the CDC is monitoring the evolution of community transmission.
• Global Context: Since its identification in 1998, the virus has caused over 750 cases globally, with a staggering average fatality rate of **58%**.

Transmission Risks: Fruit Bats and Raw Juice

Expert analysis by **Dr. Titus** emphasizes that the primary reservoir for the virus is the fruit bat. Transmission to humans often occurs through “spillover” events involving contaminated food sources.

Deputy Director-General Lin specifically warned travelers to India against consuming **raw or unheated foods**, highlighting that coconuts or date palm sap contaminated by bat saliva or urine pose a severe risk. “Raw coconut juice should be strictly avoided in affected regions,” Lin cautioned during Sunday’s briefing.

Symptoms and Public Health Advice

The CDC describes the Nipah virus as a deceptive pathogen. Symptoms can range from asymptomatic infection to acute respiratory distress and fatal **encephalitis** (brain inflammation). The virus can spread via:

1. Animal-to-Human: Contact with infected bats or intermediate hosts like pigs.
2. Human-to-Human: Direct contact with bodily fluids or respiratory droplets.
3. Foodborne: Consumption of fruit partially eaten by bats.

A 60-day public comment period began on January 16, after which the new Category 5 measures will officially take effect.