Chandipura Virus (CHPV): A Vector-Borne Cause of Acute Encephalitis Syndrome

CHPV

Context

Gujarat has recently reported seven confirmed cases of Chandipura Virus (CHPV) infection, including three deaths, prompting renewed attention to the disease.

About Chandipura Virus (CHPV)

  1. CHPV is a vector-borne virus belonging to the Rhabdoviridae family, which also includes the rabies virus, though it causes a different disease.
  2. It was first identified in 1965 in Chandipura village, Maharashtra, from which it derives its name.
  3. It causes Acute Encephalitis Syndrome (AES), a severe inflammation of the brain.

Transmission

  1. Sand flies are the primary vectors of CHPV.
  2. Ticks are suspected to act as vectors, but their role has not been conclusively established.
  3. No evidence of human-to-human transmission has been reported.

Epidemiology

  1. Children are the most affected group.
  2. Outbreaks occur mainly during the rainy season, particularly in western and central India.
  3. Previous outbreaks in India have reported a case fatality rate (CFR) of 56–75%.

Clinical Features

  1. Common symptoms include high fever, severe headache, vomiting, muscle pain, weakness, irritability, drowsiness, seizures, confusion, and, in severe cases, loss of consciousness.
  2. The disease can progress rapidly, particularly in children, and may lead to severe neurological complications.

Treatment

  1. No specific antiviral drug or vaccine is available.
  2. Treatment is limited to supportive care to manage symptoms and prevent complications.