BIOS10115 Lecture Notes - Lecture 10: Herd Immunity, Hospital-Acquired Infection, Microorganism
16 Jun 2016
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Zoonoses- disease common to animals that humans sometimes get. 4 contagious disease- want herd immunity high ex: for influenza, 90% of pop needs to be immune so virus can be stopped (difficult for virus to spread) 5 pathogen eradication- only been accomplished with smallpox. Pakistan and afghanistan don"t want to get immunized for polio (don"t need to know)- polio close to being eradicated, though. Our defense system- how our body prevents infection. 2 main type of immunities: specific (adaptive) nonspecific (innate- born with)- not specific- not directed against specific viruses/bacteria- genetic fight off everything. 11 largest organ of body and excellent physical barrier to microorganism = skin. 13 if microorganism gets into body- that"s when blood starts reacting. 2/3 of our blood is liquid, other part is cells formed elements- term used instead of cells because one component = platelets- not really cells.
