India, Sept. 17 -- Mumbai has recorded a spike in malaria and chikungunya cases this year, even as dengue and gastroenteritis cases declined, said the Brihanmumbai Municipal Corporation (BMC) monsoon report released on Tuesday.

As per BMC data, between January and September 15 this year, the city recorded 6,277 malaria cases and 542 chikungunya cases, compared to the 5,182 and 366 cases recorded last year in the same period.

In contrast, dengue cases dipped to 2,724 from 3,435 last year during this period, gastroenteritis cases fell from 6,599 to 5,989, and cases of leptospirosis too saw a marginal fall from 628 cases last year (January to September 30) to 558 cases so far this year. Hepatitis cases rose from 791 during this period last...