ENH 322 Midterm: Epi Exam SEMESTER 2 Disease Chart

• School: Ryerson University
• Department: Environmental Health
• Course: ENH 322
• Professor: Corrine Ong

Document Summary

Within 15 50 days (usually 30 days) after exposure. Fever, nausea, stomach discomfort, malaise, dark urine, jaundice in adults & school aged kids. Younger kids have no or mild symptoms illness not accompanied by jaundice. Most mild serious cases recover naturally. 15% of cases recurrent for up to 1 yr, longer chronic cases not known. No persistent liver inflammation, cirrhosis (scarring) of liver or liver cancer like b & c has. People with pre-existing chronic liver disease increased risk of complications from hav. Death from hav is rare fatality rate 0,1 % to 0. 3%, rises to 1. 8% in people >50 to 12. 5% in patients >60 hospitalized bc of disease. 1-2 wks before symptoms till 1st wk after jaundice. Infected people don"t carry the virus permanently (unlike b & c) Fecal-oral route contaminated food (shellfish, veg, water) Travel to countries 40% of cases have been travellers.