Overview

• Municipal data in Delhi show 499 dengue cases, 235 malaria and 37 chikungunya so far in 2025, exceeding last year’s tally for the same period.
• BMC records for Mumbai point to sharp July–August increases: malaria 4,151 to 5,706, dengue 1,160 to 2,319, leptospirosis 244 to 471.
• City clinics report daily influxes of roughly 10–20 patients with fever, cough, stomach upset or mosquito-borne illnesses.
• Delhi specialists report a surge of influenza A, including H1N1 and H3N2, concentrated in adults, with only complicated cases needing antivirals.
• Most infections are self-limiting, and physicians stress basics like removing stagnant water, using repellents, wearing masks, handwashing, hydration and considering annual flu vaccination.