LONDON—A case report in The Lancet has highlighted the threat of fake drugs for malaria — the subject of intensive research at the London School of Hygiene & Tropical Medicine. Dr Harparkash Kaur told Peter Goodwin what her laboratory is doing about the global threat of counterfeit drugs, and what happened in the recent case of the patient with malaria in Spain who had been taking anti-malarial drugs purchased in Equatorial Guinea.