NN+Flu+Notes


 * proteins called "receptors" are on the surface of cell.
 * virus fuses with those proteins and injects the genes into the cell.
 * flu virus infects the respiratory cells
 * can differentiate because of the certain proteins on the respiratory cells.
 * virus gets infected cell to copy virus
 * then kills cell and copies go to other cells
 * so dangerous because the body may not recognize the virus until it is too late.
 * takes time to recognize antigens
 * antibodies basically eat the infected cell
 * viruses that infect us also infect pigs/swine
 * when people raise pigs, get virus from pigs (flu comes from pigs)
 * many diseases start from other animals and mutate and spread into human population
 * many viruses do not infect animals
 * pigs have similar symptoms as humans
 * pigs are believed to be able to get both human and bird flu, and if the mated, there would be a human avian flu
 * can pass on flu before know you are sick.
 * there is now a nasal spray vaccine. made of weakened, not dead, viruses