Severe Childhood Malaria Linked to Long-Term Cognitive Impairment
Children who survive severe forms of malaria, particularly cerebral malaria and severe malarial anemia, face significant risks of lasting cognitive and academic challenges, according to recent research. A study published in JAMA found that these children experience impairments in overall cognition and math achievement that can persist for years after infection, with effects observed up to 15 years later.
The research, conducted by scientists from Indiana University School of Medicine and Makerere University in Uganda, followed nearly 900 children in Uganda who had experienced severe malaria in early childhood. Participants were evaluated for an average of about eight years, with some followed for up to 15 years after their initial illness. The mean age of participants at follow-up was 11 years.
Children with a history of cerebral malaria or severe malarial anemia had significantly lower scores in overall cognition and math compared to those who had not experienced malaria. Notably, attention and reading scores did not differ significantly between the groups, suggesting that the impact is particularly pronounced in specific cognitive domains.
Previous studies had indicated cognitive impairment up to two years after severe malaria, but this research extends the timeline of concern, showing that the effects can endure well into adolescence. The findings underscore the long-term burden of severe malaria beyond mortality, affecting educational attainment and future opportunities.
As noted by Chandy John, MD, co-leader of the study and Ryan White Professor of Pediatrics at the IU School of Medicine, “Cerebral malaria and severe malarial anemia, which affect more than a million children every year, are not only causes of death in children, but also associated with very long-term costs in terms of a child’s thinking and their academic achievement.” He emphasized that deficits in math skills, in particular, can hinder a child’s ability to succeed in school, pursue higher education, and secure stable employment.
The World Health Organization reported 282 million malaria cases globally in 2024, with children under five accounting for approximately 75% of the 610,000 malaria-related deaths that year. While preventive measures and treatments have reduced mortality, the study highlights an urgent need for interventions that address the neurological consequences of severe malaria to mitigate its lasting impact on child development.
Efforts to develop better prevention strategies and more effective therapies are critical not only to save lives but also to protect the cognitive potential of children in malaria-endemic regions.