Hepatitis Viruses


VIRUS:

GENERAL CONCEPTS:

DISTINCTIVE PROPERTIES:

PATHOGENESIS:
Hepatitis A Hepatitis B Hepatitis C
Genome +RNA DNA +RNA
Onset Abrupt Insidious Insidious
Transmission Fecal-Oral Parenteral Parenteral
Incubation (days) 15-40 60-180 28-112
Asymptomatic infection usual common common
Carrier State no yes yes
Chronicity 0% 10% 30-60%
Sequelae no cirrhosis cirrhosis

HOST DEFENSES:

EPIDEMIOLOGY:

DIAGNOSIS:

CONTROL: