ANTC67H3 Lecture Notes - Lecture 8: Respiratory Tract, Herd Immunity, Pneumonia
Document Summary
Antc67 lecture 8: encapment of soldiers in ww1. If it gets complicated, it can lead to death: most of the time flu occurs, the people most susceptible to dying from it are old people because their immune system is weaker. Infection from influenza is usually mild and not a serious worry: drift is when there are changes so massive, they basically produce a new microorganism that isn"t encountered before. Its not seasonal, it"s a major change in the molecular/antigen of the virus: preceding populations haven"t had any immunity to it, so getting a virus where we don"t have herd immunity to it. It was something that did not exist before: bird feces can contaminate water supply, when there is an outbreak, many birds get slaughtered. In 1918 it changed, to a w shaped: comorbidity is when you get a disease along with another disease.
