The scientists are examining reports from three independent research laboratories into the origin of Aids. They are expected to outline their conclusions on Monday afternoon. Another theory is that the Aids virus jumped to humans as a result of a bite or after a hunter became infected while capturing a monkey or ape, or preparing its flesh for eating. Other explanations for the sudden emergence of Aids centre on deforestation bringing monkeys and apes into greater contact with humans, coupled with political and social upheavals. Figures suggest that there is a new case of HIV infection every 11 seconds.
Work is ongoing around the world to develop a vaccine but as yet there is no known cure.
TB screening after pupil falls ill Burial call for aborted foetuses Apples and tomatoes 'good for lungs' Links to more Health stories are at the foot of the page.