Acute encephalitis syndrome (AES)

As per National vector Borne diseases control program found 10485 cases of AES 632 reported death across 17 states.

Case fatality rate is 6%. In which 25% among children.

Worst affected states are UP, Bihar, jharkhand, Manipur, Tamil Nadu, west Bengal.

Acute encephalitis syndrome

It is a bunch of diseases include

  • Hypoglycemia (low level of blood sugar)
  • Chicken pox
  • Herpes
  • Zika virus
  • Nipah virus
  • Japanese encephalitis virus.

It is inflammation of Brain due to virus, Bacteria or fungi. It is also known as Brain fever.

High fever change the level of consciousness further paralysis leads to coma.

It affects people with weak immune system.

It can be transmitted through

  • Mosquito borne virus
  • Tick borne virus
  • Rabies virus
  • Herpes virus
  • Measles and mumps.

Since 1955 AES run parallel with Japanese encephalitis virus.

1955 Japanese encephalitis virus was first diagnosed in India.

1973 first report of Japanese encephalitis outbreak in Bankura district west Bengal.

Before 1975 few cases were identified.

Between 1975-1999 frequent outbreak near gangetic plain and Tamil Nadu coast.


High fever, headache, poor appetite, fatigue, vomiting, hallucinations memory loss etc.


  • Hydration
  • Increase in glucose levels
  • Adequate medical support
  • Minimising exposure to viruses.
  • Vaccination.