flu season runs from October to May

The vaccine prevents against infection from the flu viruses that researchers predict will be most common in the upcoming year

most cases occurring between late December and early March

For a severely ill child or one with other special circumstances, a doctor may prescribe an antiviral medicine that can decrease the duration of illness by 1-2 days and prevent potential complications of the flu

If an antiviral medication is prescribed, be sure to discuss any possible side effects with your doctor.

Given as an injection, the flu shot contains killed flu viruses that will not cause the flu, but will prepare the body to fight off infection from that particular type of live flu virus if someone comes into contact with it.

Symptoms, which usually begin about 2 days after exposure to the virus, can include: fever chills headache muscle aches dizziness loss of appetite tiredness cough sore throat runny nose nausea or vomiting weakness ear pain diarrhe

all kids 6 months through 4 years old anyone 65 years and older all women who are pregnant, are considering pregnancy, have recently given birth, or are breastfeeding during flu season anyone whose immune system is weakened from medications or illnesses (like HIV infection) residents of long-term care facilities, such as nursing homes any adult or child with chronic medical conditions, such as asthma kids or teens who take aspirin regularly and are at risk for developing Reye syndrome if they get the flu all health care personnel caregivers or household contacts of anyone in a high-risk group (like children younger than 5 years old, especially those younger than 6 months, and those with high-risk conditions) Native Americans and Alaskan natives

The nasal mist contains weakened live flu viruses that cannot cause the severe symptoms typically associated with the flu, but can cause some mild symptoms

drink lots of fluids to prevent dehydration get plenty of sleep and take it easy take acetaminophen or ibuprofen to relieve fever and aches (do not give aspirin to children or teens as it may cause a rare but serious illness called Reye syndrome) wear layers, since the flu often makes them cold one minute and hot the next (wearing layers — like a T-shirt, sweatshirt, and robe — makes it easy to add or subtract clothes as needed)

Kids who are sick should stay home from school and childcare until they are without fever for at least 24 hours without the use of a fever-reducing medicine.

So to have the best protection against the flu, it's important to get the vaccine every year.

It is given in places like hospitals, clinics, community centers, pharmacies, doctor's offices, and schools

infants under 6 months old anyone who's ever had a severe reaction to a flu vaccination anyone with Guillain-Barré syndrome (a rare condition that affects the immune system and nerves)

After 5 days, fever and other symptoms have usually disappeared, but a cough and weakness may continue

Call the doctor if your child:

has flu symptoms has a high fever, or fever with a rash has trouble breathing or rapid breathing has bluish skin color is not drinking enough fluids seems very sleepy or lethargic seems confused has flu symptoms that get better, but then get worse

All symptoms are usually gone within a week or two

The flu is contagious, spread by virus-infected droplets that are coughed or sneezed into the air

The flu usually occurs in small outbreaks, but epidemics — when the illness spreads rapidly and affects many people in an area at the same time — tend to occur every few years. Epidemics often peak within 2 or 3 weeks after the first cases occur.

Preventing the Flu From Spreading There's no guaranteed way — including being vaccinated — to prevent anyone from getting the flu

Wash your hands thoroughly and frequently with soap, especially after using the bathroom, after coughing or sneezing, and before eating. Never pick up used tissues. Never share cups and eating utensils. Stay home from work or school when you're sick with the flu. Cover your mouth and nose with a tissue when you cough or sneeze, then put it in the trash. If a tissue isn't available, cough or sneeze into your upper arm, not into your hands.