October 5, 2012 At first it seemed likely that the two known cases of illness from the new cousin-of-SARS virus may have been exposed in or near the Saudi Arabian city of Jeddah. But now it's pretty certain that a 49-year-old Qatari man who had traveled to Jeddah last month didn't pick up the virus there after all.
October 5, 2012 To curb a recent Ebola outbreak in Uganda, health workers quarantined over 40 people suspected of infection with the virus. Their belongings were burned and buried in case they were harboring the virus.
October 4, 2012 A steroid drug administered to relieve back pain has been contaminated by the spores of a common leaf mold. Five deaths have been reported so far.
September 28, 2012 Virologists have published the genome sequence of the new coronavirus, which has killed one man and hospitalized another. The mystery virus is most closely related to coronaviruses that infect bats in Southeast Asia. But this doesn't necessarily mean that the men caught the virus directly from bats.
September 27, 2012 So far only three people in the Democratic Republic of Congo are known to have contracted Bas-Congo hemorrhagic fever, two of whom died. But the small number means that scientists may have found an emerging disease very soon after it made its jump from whatever species it came from into humans.
September 26, 2012 Scientists have partially decoded the genetic sequence of a new virus, which has killed one man and hospitalized another. Advances in sequencing technologies have helped health workers rapidly respond to the virus in ways that they couldn't during the SARS epidemic of 2002.
September 24, 2012 A virus, which is genetically different than any seen before, has killed one man and hospitalized another. The virus comes from the same family as SARS, but it appears to be less contagious.
September 20, 2012 Different lineages of cat with the same coloration got their looks in unique ways. The genetic variants that determine those patterns come from different mutations in the same genes. And that has some scientists thinking there may be more to the genes than meets the eye.
September 19, 2012 The World Health Organization has confirmed 72 cases of the dreaded virus in the Democratic Republic of Congo since May; 23 of them are health care workers. Despite elaborate protective garb and other precautions, it's hard for doctors, nurses and health aides to avoid virus-laden bodily fluids of Ebola patients.
September 13, 2012 The number of deaths from an Ebola outbreak in the Democratic Republic of Congo surged in the past week, prompting concern that the outbreak was spreading. A spokesman from the World Health Organization says the outbreak is not out of control.
September 12, 2012 The Centers for Disease Control and Prevention is confident the nation has turned the corner on its worst-ever epidemic of West Nile virus disease. Next, scientists will try to figure out what made 2012 so bad.
September 11, 2012 An influenza virus that only infects pigs could very quickly lead to a dangerous flu pandemic in humans, a recent study reports. Results of an experiment in ferrets, a model for flu in humans, suggest that a swine flu virus can mutate into a contagious and fatal disease within 10 days.
September 10, 2012 In a study with about 4,000 Thai schoolchildren, a vaccine for dengue fever works well against some strains of the dengue virus. But the overall level of protection was lower than hoped for. The results suggest that a vaccine for dengue fever can be developed eventually.
September 6, 2012 Testing everyone for HIV and then giving them early treatment could theoretically eliminate the epidemic in South Africa. A mathematical model of this "test and treat" strategy suggest that it might be more expensive and take significantly longer than previously predicted.