India, Aug. 4 -- There were more than twice the number of malaria, leptospirosis and Covid-19 cases in July over the previous month, while other monsoon-related illnesses such as gastroenteritis, dengue and H1N1, or swine flu, showed a significant surge, according to data released by the Brihanmumbai Municipal Corporation (BMC) on Monday.

As per the BMC's monthly disease surveillance report, cases of malaria more than doubled, from 655 in June to 1,380 in July, while leptospirosis too more than doubled, from 33 to 78, and Covid-19 from 27 to 58. According to the data, the number of dengue cases rose from 266 to 466 from June to July; gastroenteritis from 603 to 851; and H1N1 went up from 58 to 105. The number of chikungunya cases remaine...