Understanding Nipah Virus: Origins, Symptoms, and Past Outbreaks

Understanding Nipah Virus : Origins, Symptoms, and Past Outbreaks

Understanding Nipah Virus: Origins, Symptoms, and Past Outbreaks
Encephalitis and pneumonia caused by Nipah viruses, computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs. It was initially isolated in 1999 upon examining samples from an outbreak of encephalitis and respiratory illness among adult men in those two countries.

INTRODUTION

The Nipah virus made its first appearance during the 1998 outbreak, affecting pig farmers in Malaysia. Its name is derived from the location of its discovery.

Though Nipah outbreaks are infrequent, the World Health Organization (WHO) has categorized it, along with diseases like Ebola, Zika, and COVID-19, as a priority for research due to its potential for a global epidemic.

Typically, Nipah is transmitted to humans through animals, contaminated food, or direct human-to-human contact. Fruit bats, natural carriers of the virus, are believed to be the primary source of subsequent outbreaks.

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SYMPTOMS OF NIPAH VIRUS

Symptoms of Nipah include high fever, vomiting, respiratory issues, and in severe cases, seizures and brain inflammation leading to a coma.

Regrettably, there is no vaccine for Nipah, and the mortality rate ranges from 40 to 75 percent depending on the public health response.

TOPSHOT – In this photograph taken on September 12, 2023, health workers wearing protective gear shift the body of a person who died of a Nipah virus infection at a private hospital in Kozikode, in India’s Kerala state. India has curbed public gatherings and shut some schools in the southern state of Kerala after two people died of Nipah, a virus from bats or pigs that causes deadly fever, officials said on September 14. (Photo by AFP) (Photo by -/AFP via Getty Images)

Previous outbreaks, starting with the first one in 1998-1999, resulted in over 100 fatalities in Malaysia. Drastic measures were taken, including the culling of a million pigs to contain the virus. The outbreak also reached Singapore, causing 11 cases and one death among slaughterhouse workers who had contact with pigs imported from Malaysia.

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