<p>There are 1.4 million HIV-positive persons living in Kenya. The incidence of HIV is 0.14%, accounting for approximately 36,000 new infections annually. People who have recently acquired HIV are often unaware of their positive status, hence are not on antiretroviral treatment. Finding people with undiagnosed HIV infection enhances early treatment, preventing HIV transmission and speeding up the fight against the epidemic. Despite the data being available, it is unknown how long HIV cases remain undiagnosed in Malindi. Therefore, we sought to determine HIV recent and long-term infections at Malindi Sub-County.</p>