Adolescent 1 Adult 1 Animals 1 Antibodies, Viral 1 Co-infection 1 Coinfection 1 Crimean Congo hemorrhagic fever 1 Crimean-Congo hemorrhagic fever virus 1 Cross-Sectional Studies 1 Delivery of Health Care 1 Ebola hemorrhagic fever 1 Febrile illnesses 1 Fever 1 Hemorrhagic Fever Virus, Crimean-Congo 1 Hemorrhagic Fever, Crimean 1 Hemorrhagic Fever, Ebola 1 Hemorrhagic Fevers, Viral 1 Humans 1 Immunoglobulin M 1 Malaria 1 Middle Aged 1 Tanzania 1 Viral haemorrhagic fevers Young Adult 1 adolescent 1 adult 1 animal 1 coinfection 1 cross-sectional study 1 fever 1