a. only found the cows when they came back to check on the farmers 18961933 Asia 1. India outbreak 2. 12 million deaths B. Bubonic plague in medieval Europelack of hygiene, chamber potsCaused by invisible bacteria, and the infection doesn’t show the symptoms straight away. Acute disease. Struck villages and towns unpredictably.horse excretions, rats and fleas lived in the straw roof of the
houses, widespread famine land was more valuable than laborusually the owner owned all the production & life was nasty, brutish, short, infant mortality (75%) ; 20% of mothers died during childbirth a. Symptoms i. acutely inflamed glands (lymph nodes) bulging “Bubos” ii. convulsions iii. fevers iv. vomiting v. thirst, generalized pain, delirium vi. 3rd day, black spots vii. 8th or 9th day you survived, permanent brain damage b. Medieval treatment totally ineffective i. disease was caused by imbalance of bodily fluid ii. 4 fluids: blood, phlegm, yellow bile, black bile iii. what did the physicians do? They would decrease the level of blood by bleeding people 1. leeches, open a vein 2. hot iron to burn bubos 3. make you vomit to get rid of the biles 4. diarrhea 5. all ended up weakening the patient c. Modern treatment is streptomycin cuts mortality to 5% C. Transmission of bubonic plague a. Rats carry fleas, which carry the bacteria1. fleas are the primary host, rats are the secondary
host b. Rats usually have partial immunity to the plaguehave been bitten enough by the fleasrelatively stable ecosystemc. But when the fleas carry the bacteria to a new rat population without immunity, the rats die off, the fleas jump to humans, and a human epidemic breaks outd. Surviving rats develop immunity and the human epidemic endse. This cycle is repeated about every 20 years, so human epidemics recur once a generationD. Effects of plague in Europe 1. Depopulation leads to breakdown of community a. law enforcement broke down, skill craftsmen decreases b. no tax collections, Parliament didn’t meet c. Dutch took over England i. evacuated because they didn’t want the Black Plague
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