Prevalence and epidemiology of hepatitis B

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  • In 2021, there were an estimated 200,385 people living with chronic hepatitis B (CHB) infection in Australia, representing 0.8% of the population.
  • Only 72.5% of people living with CHB in Australia are estimated to have been diagnosed.
  • Those born overseas and Aboriginal and Torres Strait Islander people comprise around two-thirds of all Australians living with CHB.
  • A higher prevalence of CHB infection is also observed in people who inject drugs and in men who have sex with men.
  • Over 90% of new cases of CHB in Australia are attributable to migration and cannot be prevented through local vaccination initiatives.
  • Deaths due to CHB result from complications of cirrhosis, liver failure and liver cancer (specifically, hepatocellular carcinoma) in up to one-quarter of people living with CHB.

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