Every 6 months of age and older, a flu vaccine should be given every season. Vaccination is especially crucial for individuals at high danger of severe influenza complications. See People at High Risk for Developing Flu-Related Complications for a complete…

Meningococcal disease relates to any disease induced by Neisseria meningitidis, also known as meningococcus. Often these diseases are serious and can be fatal. They include brain and spinal cord lining diseases (meningitis) and diseases of the bloodstream (bacteremia or septicemia).…