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Sunday, May 20, 2018

Nipah Virus - All You Need To Know

According to the World Health Organisation (WHO), Nipah virus often shows no marked symptoms but affects the respiratory system at a later stage.
  1. Nipah virus causes a rare brain fever that spreads from fruit bats to livestock as well as humans.
  2. High fever, terrible headache and breathing trouble are some of the known symptoms of the disease, which has a high fatality rate.
  3. It is in the 2018 WHO list of viruses that could potentially pose a huge health scare. There is no vaccination available for Nipah as of now.
  4. The virus was first identified among pigs in Kampung Sungai Nipah, Malaysia in 1998
  5. Last known outbreak in the subcontinent was in 2004 in Bangladesh
THE VIRUS
Nipah virus (NiV) infection is a newly-emerging zoonosis (a disease which can be transmitted to humans from animals) that causes severe disease in both animals and humans. The natural host of the virus are fruit bats of the Pteropodidae Family, Pteropus genus.
FIRST OUTBREAK
NiV was first identified during an outbreak of disease that took place in Kampung Sungai Nipah, Malaysia in 1998. On this occasion, pigs were the intermediate hosts. However, in subsequent NiV outbreaks, there were no intermediate hosts. In Bangladesh in 2004, humans became infected with NiV as a result of consuming date palm sap that had been contaminated by infected fruit bats. Human-to-human transmission has also been documented, including in a hospital setting in India.
TRANSMISSION
The viruses jump the species barrier and infect a secondary animal host, transmission takes place through direct contact with infected bats, pigs, or from other NiV-infected people and people have been also cautioned that they should not consume fruits that have fallen on to the ground.
SYMPTOMS
NiV infection in humans has a range of clinical presentations, from asymptomatic infection to acute respiratory syndrome and fatal encephalitis. NiV is also capable of causing disease in pigs and other domestic animals. Nipah virus primarily causes an encephalitic syndrome with a high mortality rate. The characteristic MRI abnormalities are multiple, small (less than 5 mm), asymmetric focal lesions in the subcortical and deep white matter without surrounding edema.
TREATMENT
There is no vaccine for either humans or animals. The primary treatment for human cases is intensive supportive care
PRECAUTIONS
Nipah virus infection can be prevented by avoiding exposure to sick pigs and bats in endemic areas and not drinking raw date palm sap and not consuming fruits that have fallen from trees

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