The NYC Department of Health and Mental Hygiene says, according to its data, that the flu has arrived in the Big Apple—and urges New Yorkers to get the flu vaccine. Health Commissioner Dr. Thomas Frieden said, “The best way to protect yourself or your loved ones from getting very ill is to get vaccinated. Young children and older adults are at higher risk of hospitalization and death if they get sick. So don’t take the risk - get the vaccine today.” Influenza—which is not just a bad cold— symptoms "include a fever, dry cough and body aches - not a stomach ache or vomiting." Frieden adds, "If you do get influenza, cover your cough and stay home to minimize the spread of disease to others." There's apparently plenty of flu vaccine left; here's info on where you can get a flu shot (uninsured people get them for free). And for those who love stats, here's the CDC's flu surveillance page. Image: GiantMicrobe flu plush