Monthly Reported Diseases-CDCreport

Viral Hepatitis

ICD-10 B15: Acute Hepatitis A
ICD-10 B16: Acute Hepatitis B
ICD-10 B17: Other Acute Viral Hepatitis
ICD-10 B18: Chronic Viral Hepatitis
ICD-10 B19: Unspecified Viral Hepatitis
3.1.1 Identification

1) Hepatitis Types A and E
Clinical features
These share same clinical course; no evidence of chronic form. Infection occurs in childhood and young adults asymptomatically or with a mild illness- may be detectable only through laboratory tests of liver function.

Onset of illness in adults is usually abrupt with fever, malaise, anorexia, nausea and abdominal discomfort, followed within a few days by jaundice. The disease varies in clinical severity from a mild illness lasting 1–2 weeks to a severely disabling disease lasting several months. Prolonged, relapsing hepatitis for up to 1 year occurs in 15% of cases. Convalescence is often prolonged. In general, severity increases with age, but complete recovery without sequelae or recurrences is the rule. Case-fatality for Hepatitis A is normally low, 0.1%–0.3%; it can reach 2.7% for adults over 50; persons with chronic liver disease have an elevated risk of death from fulminant hepatitis A. The case-fatality rate for HEV is similar to that of hepatitis A except in pregnant women,