HLT 2320 Chapter Notes - Chapter 9: Streptococcal Pharyngitis, Bacilli, Staphylococcus
8 Feb 2019
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Document Summary
Introduction: until the beginning of the 20th century, infectious diseases were the major killers of humans. Infectious diseases were largely conquered through public health measures: purification of water, proper disposal of sewage, pasteurization of milk. Improved personal hygiene: discovery and introduction of antibiotics. Chain of infection: pathogen: a virus, bacterium, or parasite that causes the disease in humans. Interruption: kill pathogen with antibiotics: reservoir: a place where the pathogen lives and multiplies, humans, nonhuman species, contaminated water or food. Interruption: eliminate the reservoir: method of transmission: a way to travel from host to host, or from reservoir to host. Interruption: quarantine, hand washing, condom usage: susceptible host: host must be susceptible to develop the infection. Immunizations are given to anyone who is bitten by a wild animal that cannot be captured and tested: bats are the most dangerous rabies threat to humans. Asia, and the western pacific: only nigeria, pakistan, and afghanistan have endemic polio.
