Malaria affects children and pregnant women most

EDITOR—Croft has written about preventing malaria in travellers.1 Malaria is more common and more severe in children and pregnant women, and clear recommendations regarding prevention in these groups are crucial.

Case reports of potential toxicity caused by diethyltoluamide in children and pregnant women are poorly documented, and in most cases use of the repellent was excessive. A retrospective study of 9086 reports of diethyltoluamide toxicity found that children were no more likely to develop adverse effects than adults.2 Almost two thirds …