Textbook Notes (362,730)
Canada (158,028)
HLTB21H3 (177)
Chapter 9


2 Pages
Unlock Document

University of Toronto Scarborough
Health Studies
Caroline Barakat

Prashanthan Oct/25/2012 Smallpox Ch.9  1520 – Expedition arrived from Spanish Cuba to Aztec Empire o A slave-member in crew had smallpox o Spread from village to village  Indiscriminate disease o Affects everyone regardless of class, social status, wealth, etc A Look Back  Suspected that humans acquired infectious agent from pox-like disease of domesticated animals during agricultural revolution  Africa/India  West of China  Known in Greece, but not a health threat until the Plague of Antonius  Contributed to the settlement of North America by the French and English  1763 – English used as weapon of germ warfare against Indians o Blankets/Hankerchiefs deliberately contaminated by English, and sent to India to start epidemic, and ensured the Indians’ defeat in the war The Disease of Smallpox  Caused by virus  Enters body via inhalation OR direct contact/thru contaminated formites (inanimate objects)  Multiplies in mucous membrane of nose and mouth  Individual is infectious a day before rash appears until all scabs have fallen off  Many die few days/week after rash appears  Infection results in destruction of skin’s elasticity, leaving permanent crater-like scars o Pockmarks  2 types o Variola major – more deadly o Variola minor – less fatal o Differ in their genetic material slightly “Catching” Smallpox  Contagious  Spread from person to person (no animal reservoirs)  Since it is so contagious, it requires a large number of susceptible humans to exist in a community  Spreads more rapidly during winter in temperate climates and during dry season in tropics 1 Prashanthan Oct/25/2012  Most individuals who were susceptible either recovered and became immune, or died  Mainly started to aff
More Less

Related notes for HLTB21H3

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.