What was McNeill trying to prove? Thesis: Disease and plagues had a major impact on the population rate and greatly impacted world civilizations.
The first is the worst Mcneill believed that early humans had a major impact on the spread of disease. Theory of Evolution (early humans started in Africa)
Shift to Agrigculture Early humans/Changes in agriculture and human expansion Equilibrium (before Neolithic) Larger communities (with agriculture) Faster spread Animals domesticated (closer contact)
Rise and Fall Rome and Han declined Christianity and other religions spread People looked to God when disease struck
Eurasia and the Black Plague Called it ultimate depopulator Outbrakes in china and spread to rest of world Started after equilibrium was broken when mongols arrived and started trade routs back up-led to disease spreading again lead to black plague (out fo reach of human control)
Exchange New laws Syphillis debate Aztec Conquest
parasites Microparasites = can’t be seen with the human ice…wiped out population because they were unknown until the side effects of the disease were present and it was to late Macroparasites = large enough to be seen with the human eye..feed of hosts which can then transfer to new hosts therefore it is alive in two locations, spreading the disease faster and faster
1700’s - now Modern Medicine Vaccinations 1800’s = another epidemic (cholera) Koch provided vaccine Sewers were watched and cleaned out