The Bangladesh Institute of Epidemiology, Disease Control and Research (IEDCR) has reported a total of nine human Nipah virus cases this year as of Feb. 2015. Of the nine cases, health officials report six fatalities, or a 67% case-fatality rate.
These cases are from 6 different districts. The districts are: Nilphamari, Ponchoghor, Faridpur, Magura, Naugaon, Rajbari. Median age of the Nipah cases 13 years (Range: 2 to 45 years). 5 (56%) were male.
One cluster was identified in Naugaon, consists of three Nipah encephalitis cases, according to the IEDCR. Of these two are laboratory confirmed cases. Numbers of isolated cases are 6.
According to the World Health Organization (WHO), in the Bangladesh and India outbreaks, consumption of fruits or fruit products (e.g. raw date palm juice) contaminated with urine or saliva from infected fruitbats was the most likely source of infection. Fruit bats of the family Pteropodidae – particularly species belonging to the Pteropus genus – are the natural hosts for Nipah virus. There is no apparent disease in fruit bats.
In more recent outbreaks of the disease, person-to-person transmission has been seen in Bangladesh and India.
