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.
The nasal spray vaccine contains a live attenuated flu virus, but the virus is weakened so that it cannot cause the flu. The viruses in the nasal spray can't replicate in the warm temperatures of the lungs and other parts in the body.rivalent flu vaccines protect against two influenza A strains, H1N1 and H3N2, and one influenza B strain. Quadrivalent flu vaccines â offered for the first time in the 2013-2014 flu season â protect against the same strains as the trivalent vaccine, as well as an extra influenza B virus.