True about the epidemiology of influenza
Correct Answer: Pandemics occur
Description: The incubation period is 18-72 hours.Major reservoir of influenza viruses exists in animals and birdsOccur in pandemics every 10-40 years.During pandemics, attack rates tend to be high 5-10% in adults, 20-30% in children.Infects all ages and sexes. Park 23e pg: 147
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Social & Preventive Medicine
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