Around 19 children have died and 16 others were undergoing treatment in hospitals due to outbreak of a mysterious fever in Bihar's Gaya and Muzaffarpur districts in the past fortnight, official sources said on Monday.

Eight children have died in the ANMCH hospital in Gaya and six others were hospitalised, ANMCH Superintendent Dr Sitaram Prasad said.

In Muzaffurpur district, 10 children have died due to mysterious fever and eight others were undergoing treatment at Kejriwal Hospital since the past fortnight, its director B B Giri said. One child died in the SKMCH in Muzaffarpur, while two others were admitted with symptoms of the fever at the hospital, the sources said.

The two districts had witnessed outbreak of the mysterious fever last year too in which over 100 children had died.