A new study of H7N9, the avian influenza virus that has infected more than 100 people in China, reports that the pathogen is directly transmitted from live poultry to humans. The data, derived from a study of viral genetic material, suggest stemming human infections will require controlling the spread of the virus in poultry, experts said. However, exposure to poultry apparently isn't the only route of infection because 40% of people with the virus had no apparent contact with poultry. The new study confirms previous findings that the virus has mutated in ways that facilitate its infection of humans.
Published in Brief: