But diapers aren't meant to safeguard against vapours or other elements in tear gas, so neither will a surgical mask. The N95 or X301 do not protect the wearer from pollution. Yu says the respirators block containments in particle form only, not gases like ozone and nitrogen dioxide.
Flu vaccine is an inactivated vaccine, meaning that it contains killed influenza virus. The killed influenza virus is injected into muscles or skin and stimulates the immune system to produce an immune response (antibodies) to the influenza virus.
Flu vaccines are available either as. 1  a trivalent or quadrivalent injection (TIV or QIV), which contains the inactivated form of the virus. 2  a nasal spray of live attenuated influenza vaccine (LAIV, Q/LAIV), which contains the attenuated or weakened form of the virus.