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Department
Geography
Course
GGRB28H3
Professor
Torri
Semester
Winter

Description
L09 Influenza - respiratory infection transmitted via respiratory secretions with incubation of ~1-5 days - seasonal DecemberMarch survives better in dry environments with little sun - symptoms: fever, chills, body aches, sore throat, non-productive cough, runny nose, headache [may lead to respiratory problemspneumonia - people who have weak immune system, infants, pregnant women, more subject - Spanish Flu mainly affected people ages 20-25 - Type A: most virulent, accentuates and mutates - Type B: only affects humans - Type C: humans & some animals (dogspigs) - antigenic shift (evolution of subtypes) - zoonosis: transmission of virus between species (e.g. pigs to humans, or pigs to birds) - Avian influenza (amongst birds), Pandemic influenza (causes global outbreak), Seasonal influenza Avian Influenza - type A affects domestic and wild species - capable of killing, <50% of those who contract it will die - occurs when humanbird contact increases but does not transmit human to human - aquatic birds are natural reservoirs --- can affect chickensturkeys - 218 poultry cases from 2003-2006, >124 human deaths (deaths in ferrets, felids, domestic cats) - high density spreads influenza [poultry centres co-located with humans] Increased prevalence due to.. - spread via bird saliva, nasal secretion, feces, contact with humanspoultry - increa
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