Indian health authorities are moving quickly to control a Nipah virus outbreak after five confirmed cases and the quarantine of nearly 100 people in West Bengal. Officials said three fresh infections were detected earlier this week, adding to two earlier cases involving a male and a female nurse. Both nurses were employed at a private hospital in Barasat, close to Kolkata. According to Press Trust of India, the newly confirmed patients include a doctor, a nurse, and another healthcare worker.Nipah Virus Outbreak India: What Is Nipah Virus?Nipah virus (NiV) is a zoonotic infection, meaning it can spread from animals to humans. Fruit bats, also known as flying foxes, are the primary carriers, but the virus can also be transmitted through pigs and other animals such as goats, horses, dogs, or cats. According to the Cleveland Clinic, infection can occur when:People or animals come into contact with bodily fluids like blood, urine, stool, or saliva from an infected animal.People consume food items contaminated by infected animals.People have close contact with someone infected with Nipah virus, most often while providing care.The most effective way to reduce the risk of Nipah virus is to avoid contact with sick animals, particularly bats and pigs, in regions where outbreaks have been reported. It is also advised to stay away from foods that animals could contaminate, such as raw date palm sap or partially eaten fruit. Since Nipah can spread between people through bodily fluids, caution is essential when interacting with infected individuals.Nipah virus can lead to symptoms ranging from mild illness to severe disease, including encephalitis, which can be fatal. At present, there is no specific drug or vaccine available, and treatment focuses on managing symptoms and providing supportive care.Preventing Nipah virus relies on strict infection control practices, including the use of protective gear, proper surface disinfection, and avoiding areas or animals linked to known outbreaks.Nipah Virus Outbreak India: Where Is Nipah Virus Found?Nipah virus outbreaks are reported almost every year in parts of Asia, mainly in Bangladesh and India. The virus was first identified in 1999 during an outbreak in Malaysia and Singapore that caused around 100 deaths. To stop the spread, more than one million pigs were culled, resulting in significant economic losses. Since then, roughly 20 outbreaks have been recorded.People traveling to countries prone to Nipah outbreaks, such as Bangladesh, Malaysia, Singapore, or India, are advised to take extra precautions. Other regions, including Cambodia, Indonesia, Madagascar, the Philippines, and Thailand, may also be at risk because the bat species responsible for spreading the virus are present there.Nipah Virus Symptoms and CausesEarly signs of Nipah virus infection may include:FeverHeadacheDifficulty breathingCough and sore throatDiarrheaVomitingMuscle aches and extreme weaknessSymptoms usually appear within four to 14 days after exposure. Many people first experience fever or headache, followed by breathing problems such as cough or shortness of breath.In more serious cases, the infection can progress to encephalitis, a dangerous brain inflammation. Severe symptoms may include:Confusion or altered mental stateSlurred speechSeizuresComaSevere breathing distressExperts do not fully understand why some people develop serious illness while others experience mild or no symptoms at all.Nipah Virus: How Contagious Is It?Nipah virus is infectious and can spread from animals like bats and pigs to humans through bodily fluids or contaminated food. It can also pass between people through close contact, especially in caregiving settings. While it can spread via respiratory droplets in enclosed spaces, it is not considered highly airborne and usually requires close, prolonged contact for transmission. Common routes include direct exposure to infected animals or their fluids, consuming contaminated fruits or date palm sap, and contact with bodily fluids such as saliva, urine, or blood from an infected person.Nipah Virus Outbreak India: Who Is Most At Risk?People most at risk of Nipah virus are those who are more likely to come into close contact with infected animals or patients. This includes:Healthcare workers caring for Nipah patients, especially without proper protective equipmentFamily members and caregivers who have close physical contact with infected individualsPeople living near bat habitats, particularly fruit bat roosting areasThose who consume contaminated food, such as raw date palm sap or fruits partially eaten by batsFarmers, animal handlers, and slaughterhouse workers who work with pigs or other animals that can carry the virusResidents of outbreak-prone regions in India and Bangladesh, where Nipah cases recurPeople with weak immunity, who may develop more severe illness after infectionClose, prolonged contact is the biggest risk factor. Casual contact in public spaces is far less likely to spread the virus.