AP+FLU+notes

FLU NOTES:9/25/07
How a virus gets into a cell? Three reasons to get flu Vaccine: Where does the FLU come from? Getting a FLU shot can protect us from A and B but not C A: Found in animals B: is found in humans
 * The protein of the virus connects to the cells in the lungs proteins and injects fusion with cell membrane
 * once the virus is in the cell, it multiples
 * proteins of the surface of a lung cell, the virus is the lock and only goes into lung cells
 * Our immune system will recognize antigens in our body
 * Prevents FLU- related death
 * 36 thousand ppl die in the US b/c their immune system is not strong
 * Prevents Severe illness
 * FLU puts 200 thousand ppl in the hospital each year over 65 yrs. and under 2 yrs.
 * Protects other people
 * If you are around old ppl and under 2 yrs. you should get a vaccine b/c they don't have a strong immune system
 * the Virus that infect us also infect pigs
 * there are swan pigs that have this virus and farmers who raise these pigs can get the virus and spread to other ppl
 * this is how the virus started
 * come from some Asian swan pigs
 * Most of our diseases come from animals
 * HIV came from Africa b/c the monkies there have it
 * Mad cow disease came from cows and they got it from sheep....
 * Bird FLU, West NIle Virus came from mosquitoes

FLU Season: November- March
 * have it for 1-4 days before symptoms
 * starts in school

Vaccine FLU: How is the Vaccine Made:
 * collect virus from Asia
 * pick the 3 virus to see what is most common and make the vaccine
 * two different subtypes of influenza A and B go into flu shots for the following fall and winter
 * takes about 2 weeks for the body to notice the vaccine
 * protection last for about 6 months
 * grow virus in hen eggs
 * the vaccine is a killed virus
 * each year a different vaccine is made b/c the virus can vary
 * side affects are rare
 * Nasal spray: the virus is not completely dead, its just weakened