Virus, Public Health | featured news

Chinese scientists have for the first time found strong evidence of how humans got infected with a new strain of bird flu: from chickens at a live market. In a small study of four patients who caught the new H7N9 virus, Chinese scientists compared swabs from birds at live markets in eastern China to virus samples from patients. The scientists found the virus from one patient was nearly identical to one found in a chicken. The research was published online Thursday in the journal Lancet.

The death toll in China's bird flu crisis stood at 10 on Friday, as Hong Kong authorities announced plans to test all poultry imported from the mainland.

With confirmation that a sixth person has died from a mysterious avian-borne virus, Chinese officials escalated their response on Friday, advising people to avoid live poultry, dispatching virologists to chicken farms across the country and slaughtering more than 20,000 birds at a wholesale market in Shanghai where the virus, known as H7N9, was detected in a pigeon.

A middle-aged man who transported poultry for a living and another unidentified person have died from a new strain of bird flu, bringing the death toll to five among 14 confirmed cases in China, the government and state media reported Thursday. The 48-year-old man, who died in Shanghai, is one of several among the infected believed to have had direct contact with fowl. Until recently, the virus, called H7N9, was not known to infect humans.

By tracking one patient’s immune response, scientists have tracked how a series of mutations led to an antibody that can defeat many H.I.V. strains.

Chinese authorities tried to calm spreading health concerns Wednesday after a third person was reported to have died from a new type of bird flu. The emergence in China of the H7N9 strain of avian flu — a total of nine cases have been reported since it was revealed last weekend — are troubling because the strain has not previously been found in humans.

The Centers for Disease Control and Prevention (CDC) on Thursday warned state and local health officials about potential infections from a deadly virus previously unseen in humans that has now sickened 14 people and killed 8.

Pregnant women should get flu shots, health experts say, but they've got to be more careful than others about over-the-counter medications for relief.

With the nation in the grip of a severe influenza outbreak that has seen deaths reach epidemic levels, New York State declared a public health emergency on Saturday, making access to vaccines more easily available.

Influenza has officially reached epidemic proportions in the United States, with 7.3 percent of deaths last week caused by pneumonia and the flu, the U.S. Centers for Disease Control and Prevention said on Friday. That is just above the epidemic threshold of 7.2 percent. Nine of the 10 U.S. regions had "elevated" flu activity, confirming that seasonal flu has spread across the country and reached high levels several weeks before the usual time of late January or February. The other region, the Southwest and California, had "normal" flu activity last week.