A rare but deadly virus has re-entered headlines after two confirmed cases of Nipah virus were detected in India recently, prompting heightened surveillance across parts of Asia and renewed questions about how ready we are for the next pandemic.
While the outbreak is small and has been declared contained by Indian authorities, the virus’s high fatality rate and lack of a vaccine have raised alarm, particularly after years shaped by COVID-19.
The recent cases were identified in West Bengal, involving healthcare workers who were treating a patient suspected of carrying the virus. So far, no additional cases have been confirmed, and authorities say the risk to the wider public remains low.
Even so, neighbouring countries, including Singapore, Thailand and Malaysia, have stepped up airport health screening for travellers arriving from India. The World Health Organisation (WHO) continues to list Nipah as a priority too, not because it is spreading widely, but because of how severe it can be when outbreaks do occur.
So how concerned should we be here? Here’s what you need to know.
What is Nipah virus?
Nipah virus is a zoonotic virus – meaning it jumps from animals to humans – and is considered one of the world’s most serious emerging viruses. It was first identified in 1998 during an outbreak among pig farmers in Malaysia and Singapore, where hundreds were infected, and more than 100 people died.
The virus’s natural reservoir is fruit bats, also known as flying foxes, and people can become infected through:
- Direct contact with infected animals (bats or pigs)
- Eating food contaminated with animal saliva or urine (such as fruit)
- Close contact with someone who is sick with the virus
What are the symptoms?
Symptoms can range from mild to severe, and typically begin 4–14 days after exposure. Common early signs include:
- Fever
- Headache
- Cough
- Sore throat
- Difficulty breathing
- Vomiting
In more serious cases, the infection can progress to encephalitis (brain inflammation), causing confusion, seizures and coma. The fatality rate varies by outbreak but is estimated between 40 per cent and 75 per cent, making it far deadlier than influenza and, in some settings, COVID-19.
What’s going on with the recent outbreak?
In late December 2025 and early 2026, Indian health authorities reported two confirmed cases of Nipah virus infection in West Bengal – the first in that state in nearly 20 years. Both cases involved healthcare workers, highlighting the risk of transmission in clinical settings.
India’s Ministry of Health says the outbreak has been contained, with all known contacts traced, tested and monitored. None have since tested positive, and no community transmission has been detected.
Despite this, several Asian countries have introduced enhanced border screening measures, including temperature checks and health declarations, particularly for travellers arriving from India. Health officials have also urged caution around misinformation, noting that some early reports overstated the scale of the outbreak.
How does Nipah virus spread?
Nipah can spread between people, particularly through close contact with bodily fluids, and outbreaks have previously occurred in hospitals and households. However, human-to-human transmission is generally limited and far less efficient than highly contagious respiratory viruses.
Most outbreaks over the past two decades – particularly in Bangladesh and India – have been small and linked to specific exposure events, such as contaminated food or animal contact, rather than sustained community spread.
While Nipah is on the WHO’s watchlist due to its severity, experts stress that it does not currently behave like a virus capable of causing a fast-moving global pandemic.
Should we be worried?
There are no reported cases of Nipah virus in Australia, and the current outbreak poses no direct threat to the local population.
While fruit bats – the virus’s natural hosts – do exist in parts of Australia, Nipah has never been detected here. Australian biosecurity and public health authorities actively monitor emerging infectious diseases and have systems in place to rapidly investigate unusual cases in both humans and animals.
Current travel advice does not indicate a risk to Australians, though Nipah is listed as a disease to be aware of when travelling to parts of South Asia.
If you’re travelling to regions where Nipah has previously been detected:
- Practise good hand hygiene
- Avoid contact with bats, pigs or sick animals
- Avoid consuming raw date palm sap or fallen fruit
- Seek medical advice if you develop symptoms within two weeks of travel
It’s also a good idea to check the latest advice on smartraveller.gov.au before heading off.
