Flu (influenza) is a respiratory illness that is spread from person to person through sneezing, coughing or talking. The symptoms of the flu come on suddenly, these include: fever, chills, cough, sore throat, body aches, fatigue and sometimes vomiting. Flu can be spread 1 day before symptoms develop and up to 5-7 days after becoming sick. The flu vaccine is the first and best way to reduce your chance of getting the flu and spreading it to others. The vaccine can be given to anyone over the age of 6 months. Vaccinating pregnant women protects themselves and their baby from flu infection and hospitalization, especially before baby can have vaccine. Extensive high-quality vaccine safety has been performed on the flu vaccines. Research is from the CDC indicates the flu vaccines cannot give you the flu. Public health surveillance also aids in the ongoing research on the safety and quality of vaccines.