Nearly half of us could be infected with a virus which makes us more stupid, scientists have found. The startling discovery suggests that millions may be carrying a long-lasting infection which dulls the brain. Scientists found the virus living in the throats of 44 per cent of patients tested in a small US study.
Alessandro Vespignani hopes that his latest work will turn out to be wrong. In July, the physicist from Northeastern University in Boston started modeling how the deadly Ebola virus may spread in West Africa. Extrapolating existing trends, the number of the sick and dying mounts rapidly from the current toll—more than 3000 cases and 1500 deaths—to about 10,000 cases by 24 September, and hundreds of thousands in the months after that.