Prevalence of human immunodeficiency virus infection in a cohort of tuberculosis patients at Metema Hospital, Northwest Ethiopia: a 3 years retrospective study.

Background: Ethiopia is one of the countries that are highly affected by dual epidemics of human immunodeficiency virus (HIV) and tuberculosis (TB). HIV infection is a known risk factor for the development of active TB and it challenges in diagnosis and treatment of TB. Thus, it is essential to determine the epidemiology of HIV infection among TB patients to guide clinical actions and inform the policy makers.