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.
Flu vaccines are routinely available for seasonal influenza, but these vaccines are not likely to be protective against flu caused by the H1N1 (formerly termed swine flu) virus. There is a separate vaccine against the H1N1 flu.There are two types of seasonal flu vaccines, the injection (with killed virus) and nasal spray vaccines (containing live but weakened virus). The vaccine is generally effective against the influenza virus within two weeks of administration.he vaccine is termed an attenuated vaccine because the viruses are weakened so that they do not cause severe flu symptoms. The nasal spray flu vaccine (LAIV) has been approved by the FDA for use in nonpregnant healthy people between two and 49 years of age.