Researchers have measured concentrations of bacteria in the cabin air of 12 commercial passenger aircraft and found that flying may be safer than we think.
A mood of deep pessimism has spread among the international community of AIDS scientists after the failure of a trial of a promising vaccine at the end of last year.
A woman whose husband died after receiving a liver transplant infected with a rodent virus is suing PetSmart claiming the chain should have warned customers that hamsters can carry lymphocytic choriomeningitis virus.
As of 28 March, 2008, the Brazilian health authorities have reported a national total of 120,570 cases of dengue including 647 dengue haemorrhagic fever (DHF) cases, with 48 deaths.