Last year’s outbreak of H1N1 (aka “swine flu”) led to the first global influenza pandemic in more than 40 years, and that’s despite the approximately 114 million doses of seasonal flu vaccine and 81 million doses of H1N1 flu vaccine that were administered in 2009. So what’s in store for the 2010-11 flu season? “This flu season should be similar to last year’s,” says Dr. Seth Feltheimer, an internist at New York-Presbyterian Hospital. But this year, instead of having separate vaccines for various strains of the flu, the Centers for Disease Control and Prevention (CDC) expects to produce about 160 million doses of a single vaccine that will protect against three different flu viruses: H3N2, influenza B virus, and the H1N1 virus that caused so much illness last season. In preparation for the peak of flu season in January and February, experts at the CDC recommend getting the vaccine as soon as it becomes available in your area.