Kathmandu, June 7 -- Seventeen out of 21 mountainous districts have reported dengue cases since January.

The Four mountainous districts that have yet to report cases of dengue infections are Rasuwa, Manang, Dolpa and Humla.

According to data from the Epidemiology and Disease Control Division, 71 districts have already reported dengue infection this year. The remaining two districts that have yet to report dengue cases are Dhanusha and Mahottari in Madhesh province.

"Multiple studies show that vectors spreading the dengue virus have been shifting to hill and mountain regions," said Dr Sher Bahadur Pun. "Next massive outbreak of dengue virus could occur in mountain districts, and health facilities in those areas are not prepared to handl...