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Viral Hepatits: A
Single-stranded RNA (Picornavirus)
20-40 % acute hepatitis in US
Fecal-oral transmission incubation 2-8 weeks
<1% mortality: no chronic state, increased in patients with chronic Hepatitis C
Serology: Anti IgM Acute
Anti IgG Prior infectin/vaccination
Post exposure IgG effective if given within 2 weeks