September 26, 2013 Even though influenza is one of the most common illnesses, researchers say they still have a lot to learn about it. In a recent study, dozens of volunteers agreed to be infected with the swine flu so doctors could see what happened.
April 24, 2013 Concerns about the flu have intensified as the cases and fatalities mount. Transmission of the virus between birds and humans appears to happen fairly easily. It's unclear whether it can spread from one person to another.
March 8, 2013 Why do people in Boston get the flu when it's cold, while people in Senegal get sick when it's hot? Humidity is a big part of the explanation. But how flu spreads in the tropics and more temperate climates appears to be different.
January 18, 2013 The Food and Drug Administration just approved a flu vaccine made by cells taken from the fall armyworm, an agricultural pest. The cells produce copies of a piece of the flu virus's outer coat that primes the immune system. Conventional vaccines use the whole virus and take longer to produce.
January 10, 2013 Warnings that this year's flu season was likely to be a bad one are already bearing out in Boston. But an infectious disease doctor says the flu season may have already peaked last week.