Viral persistence and transmission According to a review by Brainard, et al.,<unk><unk>  was identified in almost 3 out of 4 seminal fluid samples (18 survivors) almost 4 months after initial infection, with the last positive samples being more than 6 months (203 days) after infection had occurred. Another aspect of survivors of the<unk><unk> , is that it could become sexually transmitted, as the<unk>  is present in semen nine months after the individuals are declared free of<unk> . A 2017 study found the<unk>  in the semen of some men after more than two years following the recovery from the acute infection and in one case,<unk>  viral RNA was identified up to 40 months after illness. At the start of 2021 an outbreak of EVD that caused 18 cases and 9 deaths in Guinea is thought to be due to a West Africa<unk>  outbreak survivor. This individual apparently infected a woman more than 5 years after he himself had incurred the infection
Post-Ebola virus syndrome
Crimean–Congo hemorrhagic fever
Pel–Ebstein fever
Dengue fever
Bolivian hemorrhagic fever
Postvaccinal encephalitis
Boutonneuse fever
Omsk hemorrhagic fever