Malaria resurgence in India: a critical study

Area of Science:

• Public Health
• Epidemiology
• Vector-Borne Diseases

Background:

• The Indian National Malaria Control Programme (NMCP) began in 1953, evolving into the National Malaria Eradication Programme (NMEP) in 1958.
• Initial success led to malaria eradication in 88% of areas by 1964, but challenges soon emerged.

Purpose of the Study:

• To analyze the factors contributing to the resurgence of malaria in India after initial eradication efforts.
• To understand the timeline and drivers of malaria outbreaks in relation to control strategies and insecticide resistance.

Main Methods:

• Historical analysis of the National Malaria Eradication Programme's implementation and outcomes.
• Examination of factors such as DDT shortages, infrastructure limitations, urban malaria, and insecticide resistance.

Main Results:

• Malaria resurgence occurred due to DDT shortages, inadequate surveillance, and urban malaria spread.
• The strategy of indoor DDT spraying failed to interrupt transmission in 9% of the population despite prolonged application.
• Outbreaks preceded significant insecticide resistance and occurred in areas with non-insecticidal control measures.

Conclusions:

• Malaria resurgence was driven by a combination of programmatic and ecological factors, not solely insecticide resistance.
• The NMEP's limitations in infrastructure and supply chain management hindered long-term malaria control.
• Effective malaria eradication requires robust surveillance, adaptable strategies, and addressing urban transmission dynamics.