Most districts dip below the required 176 days. America's traditional 180-day school year is more myth than reality in Illinois, as a jumble of state laws, rules and waivers allow districts to chip away instruction time, shorten school hours and cut the number of days students come to school.
The influenza virus nasal vaccine is a live virus vaccine. Influenza virus vaccine is also available in an injectable form, which is a killed virus vaccine. Influenza virus nasal vaccine works by exposing you to a small dose of the virus, which helps your body to develop immunity to the disease.
1 High-dose vaccine: developed for people over 65 years old; contains the same 3 virus strains as the trivalent vaccine but four times more potent than the traditional flu shot. 2  Intradermal vaccine: quadrivalent flu shot developed for people 18-64 years old; injected under the skin instead of in the muscle.