Navigating past and current hepatitis B infection in primary care

3.5% of the global population.1 In highprevalence areas, new infections occur mainly at birth or in childhood. Most HBV in the UK is among migrant populations from areas with high prevalence, such as SubHealth care is increasingly reliant on immune-modulating drugs that can exacerbate a chronic infection or allow a past, 'cleared' infection to reactivate. Clinicians may not appreciate the high burden of HBV among certain minority migrant groups, who may themselves have misconceptions regarding personal risk and modes of transmission, and who experience barriers to accessing health care.3 The busy GP needs to know who to test for HBV, how to tell if someone has chronic or past HBV infection, and when past