图1-1 ©Kateryna Kon/hellorf.
图1-2 ©许诺 绘制
图1-3 Unknown author
https://ons.wikimedia./wiki/File:Measles_Aztec_drawing.jpg
图1-4 ©Frederick M. Rossiter
https://ons.wikimedia./wiki/File:Measles_and_Scarlet_Fever_(3796080398)_cs.jpg
图1-5 ©thia S. Goldsmith
https://ons.wikimedia./wiki/File:Measles_virus.JPG
图1-6 ©Wilhelm Feerhttps://ons.wikimedia./wiki/File:Robert_Koch.jpg
图1-7 Unknown author
images.welle.ac.uk/indexplus/result.html
图1-8 ©Kateryna Kon/hellorf.
图1-9 ©许诺 绘制
图1-10 ©Bernardino de Sahagún
https://ons.wikimedia./wiki/File:FlorentineCodex_BK12_F54_smallpox.jpg
图1-11 https://ons.wikimedia./wiki/File:Vaation;_%22Dr_Jenner_perf_his_first_vaation,_17_Welle_V0018142.jpg
图1-12 ©CDC/ Dr. Fred Murphy; Sylvia Whitfield
https://ons.wikimedia./wiki/File:Smallpox_virus_virions_TEM_PHIL_1849.JPG
图2-1 Unknown author
https://en.wikipedia./wiki/File:Cholera.jpg
图2-2 ©Pavel Fedotov/Getty Images
图2-3 ©CDC/Dr. Edwin P. Ewing, Jr. (PHIL……（内容加载失败！）
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