Two nurses at a private hospital near Kolkata have tested positive for the Nipah virus, health authorities say, prompting a rapid public health response that includes testing, quarantine and animal surveillance. One of the nurses remains in critical condition, and investigators are tracing contacts to determine the original source.
What local health teams say about the outbreak
Officials in West Bengal confirmed the two infections after both nurses developed fever and breathing problems in late December and early January. They were treated in the hospital’s intensive care unit when their conditions worsened.
One nurse is reported to be in a coma. Authorities have identified a likely index patient who had severe respiratory illness and died before being screened for Nipah.
Investigators believe the nurses may have been exposed while caring for that earlier patient. State and national disease-control agencies are now coordinating the probe.
Testing, contact tracing and quarantine measures
Health officials say they have tested many people in the area and placed high-risk contacts under observation.
- About 180 individuals have undergone testing for Nipah as of Jan. 20.
- Twenty people deemed high-risk are in quarantine for monitoring.
- Negative results have been reported so far, but repeat testing will occur at the end of the observation window.
The quarantine period being used follows the known incubation window for Nipah: close monitoring for 21 days. Samples are processed using RT-PCR, the test that detects viral genetic material.
Animal surveillance and bat testing around Kolkata
Because Nipah is a zoonotic disease, officials expanded the investigation to animals. Teams from the National Institute of Medical Research collected blood and swab samples from bats at Alipore Zoo.
Authorities stressed that sampling followed safety protocols. RT-PCR testing is being carried out across several districts of West Bengal to rule out viral circulation in local bat populations.
Zoo staff and wildlife officials say there is no cause for immediate alarm, but they emphasize ongoing surveillance to clarify whether bats played a role in this chain of infection.
How Nipah virus spreads and why it worries experts
Transmission pathways
The World Health Organization classifies Nipah as a virus that moves between animals and humans. Known routes include:
- Direct contact with bodily fluids of infected animals.
- Contamination of fruit or fruit products by infected bats.
- Person-to-person spread through close contact with infected patients.
Typical symptoms and disease progression
In humans, Nipah can range from mild illness to severe neurological disease. Early signs often include fever, headache and sore throat.
- Muscle pain, vomiting and dizziness may follow.
- Severe cases progress to drowsiness, confusion and encephalitis.
- Respiratory distress and pneumonia are possible in some patients.
The incubation period is usually four to 14 days, and medical care focuses on treating symptoms; there is no approved vaccine or targeted antiviral therapy for Nipah.
Historical context and global risk
Nipah first emerged in Malaysia in 1999, where infections affected both humans and pigs. That outbreak caused many deaths and large economic losses for farmers when infected swine were culled.
Although Nipah has not been reported in the United States, the virus carries a high case fatality rate in several past outbreaks and is closely watched by global health authorities.
Guidance for residents and health workers
India’s health ministry has issued practical advice to reduce transmission risk. Recommendations include:
- Wear protective clothing when handling animals or cleaning animal shelters.
- Wash fruit thoroughly before eating.
- Cover sap and juice collection to prevent contamination by bats.
- Avoid entering places where bats roost, such as abandoned buildings, caves or mines.
Health officials urge vigilance and adherence to these precautions while investigations continue and lab results are finalized.
Similar Posts:
- Flesh-eating parasite prompts disaster declaration: where it’s spreading and why
- Deadly Bacteria Strain Linked to Colon Cancer Skyrockets in England: Cases Increase Tenfold!
- Gene Hackman’s Wife Succumbs to Deadly Virus: Three New Fatalities in California Linked
- Norovirus cases surge across US: how to protect yourself
- Listeria outbreak linked to 4 deaths: tainted pasta meals sold at Trader Joe’s, Walmart

Health advocate and wellness researcher, Dr. Monroe brings clarity to confusing health trends with science-backed advice. Her mission is to help readers live vibrantly, from the inside out.