Mumbai records sharp rise in dengue and malaria cases

The Brihanmumbai Municipal Corporation (BMC) has released its latest monsoon health report, revealing a significant rise in several monsoon-related diseases across Mumbai between January 1 and July 14, 2026. The data highlights a spike in cases of dengue, malaria, leptospirosis, and H1N1 infections compared to the corresponding period in the previous year.

According to the civic body, the rise in these seasonal diseases, particularly leptospirosis, is directly attributed to the continuous heavy rainfall and waterlogging experienced across several parts of Mumbai.

The data shows that malaria cases in the city increased by 18.2 percent. During the period from January 1 to July 14 in 2025, Mumbai recorded 3,115 malaria cases, which rose to 3,681 cases during the same period in 2026.

Dengue infections also registered a significant jump of 27.8 percent. The number of dengue cases increased from 734 in 2025 to 938 cases during the same timeframe in 2026.

Leptospirosis cases saw a 15.4 percent increase. The city recorded 157 cases of leptospirosis between January 1 and July 14, 2026, compared to the 136 cases reported during the same period last year.

The sharpest increase among the monitored illnesses was seen in H1N1 infections. The number of H1N1 cases in Mumbai nearly tripled, climbing from 42 cases in 2025 to 113 cases in 2026, marking the highest rate of increase among the reported monsoon-related diseases.

The BMC compiled and released these comparative statistics as part of its ongoing monsoon health tracking efforts.