In a major relief to city dwellers, Mumbai has witnessed a notable shift in monsoon-related disease trends in September this year. While malaria and chikungunya cases declined in August, dengue and several waterborne illnesses also showed a dip, states the data released by the epidemic cell of the Brihanmumbai Municipal Corporation. As per the data, Malaria cases fell from 1,553 in August to 1,411 in September, continuing a downward trend observed last year and even Chikungunya cases dropped from 220 to 139 during the same period. While Dengue cases saw a slight uptick from 1,159 to 1,384, but remained below last year’s figures, Gastroenteritis cases declined from 592 to 442 and hepatitis cases decreased from 197 to 176. Covid-19 cases continued their downward trajectory, with eight reported in September compared to 17 in August.