If you’re 65 years or older, getting a flu shot is the best way to protect yourself and those around you from flu.
From US News & World (my highlight):
USA Today reports that, overall, the vaccine was only 56 percent effective in terms of cutting the need for influenza-related medical visits. Specifically for folks age 65 and older, the vaccine was only 9 percent effective against this season's most prevalent flu strain, H3N2. "Everyone at CDC's Advisory Committee on Immunization Practices meeting was scratching their heads over this," William Schaffner, chair of preventive medicine at Vanderbilt University's School of Medicine in Nashville, told USA Today.