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.)
The Flu Vaccine. The flu vaccine is recommended for the following groups of children and pregnant women: Healthy and at-risk children between 6 and 23 months of age. Children 2 years and older who are at increased risk for serious complications from the flu because of an underlying chronic medical condition.