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 injectable influenza virus vaccine (flu shot) is a killed virus vaccine. Influenza virus vaccine is also available in a nasal spray form, which is a live virus vaccine. This medication guide addresses only the injectable form of this vaccine. Slideshow.