In an ad this weekend in national publications, more than 30 health care organizations, including the AHA, urged the public to get vaccinated against H1N1 flu. Prepared by the Centers for Disease Control and Prevention, the ad notes, "Over 136 million doses of the H1N1 vaccine are now available, with more coming every day. Now is the time to protect yourself and those around you by getting vaccinated against the H1N1 flu." The ad especially encourages vaccination for people with underlying health conditions, pregnant women, children and health care workers: "Unlike the seasonal flu, H1N1 has hit children, young people and adults under age 65 exceptionally hard. That is why we encourage you to get the H1N1 vaccine as soon as possible." The ad appeared in USA Today, The New York Times, Los Angeles Times, Washington Post and Chicago Tribune in recognition of National Influenza Vaccination Week, Jan. 10-16.