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Australian national notifiable diseases case definitions

Hepatitis B (newly acquired) case definition

This document contains the case definitions for Hepatitis B - newly acquired which is nationally notifiable within Australia. This definition should be used to determine whether a case should be notified.

Australian national notifiable diseases case definitions - Hepatitis B (newly acquired)

Reporting

Only confirmed cases should be notified.

Confirmed case

A confirmed case requires laboratory definitive evidence only.

Laboratory definitive evidence

1. Detection of hepatitis B surface antigen (HBsAg) in a patient shown to be negative within the last 24 months

OR

2. Detection of HBsAg and IgM to hepatitis B core antigen, in the absence of prior evidence of hepatitis B virus infection

OR

3. Detection of hepatitis B virus by nucleic acid testing, and IgM to hepatitis B core antigen, in the absence of prior evidence of hepatitis B virus infection.