April11-post - Lecture 39: April 11 Emerging Diseases...

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1 Lecture 39: April 11 Emerging Diseases Human Infectious Diseases - history (1700s to present) - better nutrition, hygiene & sanitation; safer water & food Factors Influencing Emergence - changes in human population growth & individual behavior - changes in technology/industry - environmental changes - increased globalization - evolution of pathogens - breakdown in public health surveillance Discussion Activity next week - none Check Qwizdom Points on SAMS https://cats.lsa.umich.edu/ Chapter 34 :794-796; Cohen Biology in the News At the beginning of the 20 th century, infectious diseases were the leading cause of death worldwide. In 1700s, life expectancy was 17 in Britain … by 1900s increased to 52 Between 1700 & 1900, average life expectancy increased and mortality decreased due to several factors that decreased host susceptibility and slowed/ stopped disease transmission: Cohen 2000 • improved nutrition • improved access to housing • access to clean water & safe food supply • improved sanitation & hygiene • invention of antibiotics & immunizations
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April11-post - Lecture 39: April 11 Emerging Diseases...

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