“there is great concern about seniors, with 52 percent not protected against the flu,” said Dr. Jane Zucker, assistant DOH commissioner for the Bureau of Immunization. “we are trying to get the word out and are distributing material to senior centers.”    In the borough, the lowest reporting areas for senior citizen flu vaccinations are locations in western Queens, including Corona, Jackson Heights and adjacent areas; and Jamaica, Hollis and Springfield Gardens. “we think in western Queens it may be due to the large immigrant population or an access issue,” Zucker said. “Some people just think they will never get the flu.”    But not contracting the virus in the past does not mean people are immune. “People are still at risk,” the doctor said, “and it’s miserable if you get it.”    The CDC estimates were released earlier this month, but reflect November statistics. Zucker believes the number vaccinated in new York City has increased, especially among children. But the DOH remains concerned that people are not taking the message seriously.    “It’s not too late to get vaccinated,” she said. “Flu activity is increasing in the city although it is not widespread yet.”    this year’s vaccine protects against three major strains of influenza, including the swine flu. The DOH reports that the virus and pneumonia are the third leading cause of death in the city, killing 2,192 residents in 2008, the latest reporting year.    Even more discouraging is the fact that fewer seniors are getting inoculated than in the past. In 2002, 63 percent of seniors got the vaccine and last year 53 percent.    “whatever your age, race or background, coming down with the flu can be miserable and lead to serious health complications and even death,” said Dr. Thomas Farley, the city health commissioner.    While yearly vaccinations are now recommended for everyone aged 6 months and older, the DOH says it’s particularly important for pregnant women, children under 5 years old, people 50 and over and those with chronic health conditions.    Any new Yorker 18 and older can get vaccinated this year at area pharmacy chains and many accept health insurance. So far, it’s estimated by the CDC that 10 percent of city adults have been vaccinated at drug stores. For others, free or low-cost doses are available through DOH clinics and Health and Hospital Corp. facilities such as Elmhurst and Queens hospital centers.    other city clinics and health centers are located in Corona, Jackson Heights, Ridgewood, Woodside, Jamaica and Springfield Gardens. For the closest location, call 311.    The peak flu season is now through March, and the vaccine takes about 10 days to become effective. Medical experts say it is safe and highly effective in preventing the illness.    Influenza is a viral infection that spreads easily from a cough or sneeze. The strain changes each year, thus the need for a yearly vaccination.    Antibiotics don’t work on viruses. For relief, use over-the-counter pain relievers or decongestants. there are three anti-viral medications available through prescription that treat symptoms, but only in the first 48 hours of the illness. they are primarily prescribed for high-risk patients because of their limited effectiveness. with treatment, symptoms that last three to five days are reduced to two to four days.    Flu symptoms include fever, weakness, body aches, headache and chills, which respond primarily to bed rest and pain medication. there is usually a sudden onset of the illness, which lasts longer than a cold, sometimes a week or more, and can be very debilitating.    because the virus spreads so easily, people are urged to take precautions. To stay healthy, the DOH recommends avoid touching you eyes, nose or mouth since that is how germs spread; eat healthy, drink lots of fluids and get plenty of sleep.    The DOH also advises people who get sick to stay home to protect others. To prevent the spread of flu, cover your cough or sneeze. Wash your hands often and carefully, especially after you cough or sneeze.