Some people do experience mild fever and fatigue for 1-2 days after injection or mild soreness in the arm at the site of injection. People may still contract other respiratory illnesses even if they have received the flu shot. These viruses which are highly contagious are spread through the air by coughing or sneezing. People who are over 65 years of age, or people under 65 who have chronic health conditions, including heart, lung and kidney diseases.
Many physicians also recommend that college students and kids in school get vaccinated.