Measles immunisation in developing countries

EDITOR, - Peter Aaby and colleagues raise issues about measles immunisation in developing countries that deserve comment and further evaluation.1 Measles before the age of 9 months remains an important problem in developing countries that was understated in the paper. In densely populated urban areas of west Africa the incidence may be as high as 30%.2 In a recent unpublished study of measles antibody levels in some 350 infants in Zaria, northern Nigeria, serological susceptibility …