Certain people, depending on their age and health, may be more susceptible to flu and should be vaccinated before flu season. According to the Group Health Cooperative, prime candidates for a flu shot include people who are:

-- Between the ages of 6 months and up to 5 years.

-- Age 50 and older.

-- Pregnant.

-- Suffering from a chronic disease.

-- Living in a nursing home or similar facility.

-- A doctor, nurse, teacher or someone else who works closely with people who are at higher risk of contracting flu. (HealthDay News)