#related to viruses

wy does genetic drift and shift happen in A?

• infleunza A does reassortment. it is genitically not stable

HA and NA antigens

something inside influ B that makes it whenever it makes the assortment. the segments of HA remain the same

• appears antigenitcally more stable than influenza A

B and C are more genitically stable than A

anyways back to lecture

slight revisiision

1. when a quadricist enters stomach. it withstands

it enters the smalle intestines and makes tropho

then they enter the large intestines and make the ulcers

by time they form the cysts