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Kerala Government Declares Two Districts Free From Nipah Virus

Published on July 03, 2018
Kerela Government's hard work pays off!.  Kerala Government has declared Kozhikode and Malappuram districts free from Nipah virus infection.
Nipah Virus

  • These districts were declared as temporarily Nipah free as no positive case of the infecton was reported till completion of double incubation period of the virus.
  • Earlier in June 2018, state government had lifted the travel advisory issued in the wake of the virus for travelling to any part of the state.
  • It also had lifted high alert in districts and said the virus has been brought under control and its spread checked.
  • It must be noted that educational institutions were also reopened.

What is Nipah Virus (NiV) Infection?

  • NiV infection is a zoonotic disease (disease transmitted to humans from animals) that causes severe disease in both animals and humans.
  • The organism which causes Nipah Virus encephalitis is RNA or Ribonucleic acid virus of family Paramyxoviridae, genus Henipavirus, and is closely related to Hendra Virus.

Origin of Nipah Virus:

  • It was first identified in 1999 during outbreak among pig farmers in Malaysia and Singapore.
  • It gets its name from Sungai Nipah, a Malaysian village, where pig farmers became ill with encephalitis.
  • In these subsequent outbreaks, there were no intermediate hosts of the virus.
  • In Bangladesh in 2004, humans got infected after consuming date palm sap that had been contaminated by infected fruit bats.

How the virus came into occurence?

  • Fruit bats of Pteropodidae Family, Pteropus genus are natural host of the virus.
  • The virus is present in bat urine and potentially, bat faeces, saliva, and birthing fluids.
  • Presumably, first incidence of NiV infection occurred when pigs in Malaysian farms came in contact with fruit bats who had lost their habitats due to deforestation.

How this virus is transmitted?

  • The virus spreads fast and is mostly fatal. Infected bats shed virus in their excretion and secretion.
  • It cannot be transmitted through air. It is transmitted through direct contact with infected bats, pigs.
  • Human to Human transmission from other NiV-infected people is also reported.

What are the signs & symtoms among people who are infected with this virus?

  • NiV infection in humans has range of clinical presentations i.e., from asymptomatic infection to acute respiratory syndrome and fatal encephalitis (inflammation of brain).
  • After exposure and incubation period of 5 to 14 days, illness presents with 3-4 days of fever and headache, followed by drowsiness, disorientation and mental confusion.
  • These signs and symptoms can progress to coma within 24 to 48 hours.
  • The mortality rate of patients infected with NiV infection is reportedly 70%.
  • By the way, it is capable of causing diseases in domestic animals too.

What is the treatment?

  • There is no vaccine for NiV disease either for humans or animals.
  • The main treatment for those infected is intensive supportive care and supportive medicines.
  • NiV Infection can be prevented by avoiding exposure of infected people without protective gear.
  • In disease prone areas, fruits strewn on the ground should not be eaten, for safety.
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