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.)
Trivalent vaccines protect against two influenza A viruses (an H1N1 and an H3N2) and an influenza B virus. 1  Trivalent vaccines are available in: 2  Standard-dose trivalent shots (IIV3), approved for use in people six months and older. (Most flu shots are given with a needle.