Prevalence of chronic HBV infection in the general population by WHO region, 2015

WHO: the World Health Organization.
* Modelled estimate: 6.6 million, rounded. The WHO Regional Office for the Americas has worked with its Member States to generate estimates through country consultations and modelling. These national estimates were consolidated in 2016 into a regional estimate of 2.8 million people living with chronic HBV infection. The difference between these estimates is consistent with the different methods used. In addition, low-prevalence settings may lead to lower precision and greater uncertainty. WHO headquarters and regional offices will continue to engage in comparative modelling to further understand the source of these differences. Such analyses should allow more precise consensus estimates in the future.