Physics covers a wide range of phenomena, from elementary particles (such as quarks, neutrinos, and electrons) to the largest superclusters of galaxies. Included in these phenomena are the most basic objects composing all other things. Therefore, physics is sometimes called the  fundamental science .
Two types of influenza vaccines are available: 1  TIV (flu shot (injection) of trivalent (three strains; usually A/H1N1, A/H3N2, and B) inactivated (killed) vaccine) or. 2  LAIV (nasal spray (mist) of live attenuated influenza vaccine.)
Flu shots can be given to children 6 months and older. Side effects might include soreness, redness or swelling where the shot was given, low-grade fever, or muscle aches. To determine how many doses of flu vaccine your child needs: 2 doses. If your child is younger than 9 and is getting the flu shot for the first time or previously only received one dose, plan for two doses given at least four weeks apart. Begin the process as early as possible.