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.)
Some children 6 months through 8 years of age getting a flu vaccine for the first time may need two doses of vaccine the first year they are vaccinated. If possible, the first dose should be given as soon as vaccine becomes available. The second dose should be given 28 or more days after the first dose.