BIO220H1 Lecture Notes - Lecture 10: Vaccine, Smallpox, Cowpox
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BIO220H1 Full Course Notes
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Document Summary
The eradication of smallpox was a great success for vaccination. Jenner exposed patients to the puss from blisters of patients with cowpox, then determined that they were immune to smallpox. Vaccinations have been great success in disease control. Hbv populations are evolving and increasing in frequency. A population of plasmodium and develop a vaccine which can only target a select few types, the frequency of the non-targeted types will increase. The vaccine is made from part of the bacteria that produces the toxin. It seems that the frequency of toxin producing strains is decreasing. Acute childhood infections - the pathogen is either cleared from the system quickly or the host dies. If the individual survives, they have lifelong immunity. The diseases for which vaccines are currently being developed for are not like this. Heritable to some extent - evidenced by twin studies. The fraction that is myopic among the younger population is significantly higher than in the older population.
