Brazilian authorities on Wednesday approved the world's first single-dose dengue vaccine, which they hailed as a "historic" achievement as cases of the mosquito-borne disease soar globally due to rising temperatures.
Nov 27, 2025
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Crimean-Congo hemorrhagic fever (CCHF) is one of the world's most dangerous yet overlooked infectious diseases. Spread by ticks and livestock, the virus causes sudden fever, organ failure, and internal bleeding, killing up ...
Nov 21, 2025
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African health authorities on Thursday confirmed a possible outbreak of an unidentified viral hemorrhagic fever in southern Ethiopia that is under investigation after eight suspected cases were reported.
Nov 13, 2025
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Rift Valley Fever (RVF) is a viral disease transmitted by mosquitoes that mainly affects livestock. It can also infect humans. While most human cases remain mild, it can cause death. The disease causes heavy economic and ...
Oct 24, 2025
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Senegal has recorded 17 deaths from Rift Valley Fever, RVF, a health ministry official said Thursday, in a rare major outbreak of the viral disease in the West African country.
Oct 10, 2025
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The Aedes aegypti mosquito that transmits dengue virus has mostly been considered an urban mosquito, but a new study of rural communities in the Peruvian Amazon suggests that pattern appears to be shifting.
Aug 28, 2025
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An analysis of data from hundreds of studies identified 22 viruses capable of persisting in human semen after infection, with nine showing evidence of sexual transmission.
Dec 12, 2024
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Scientists investigating animal viruses with potential to infect humans have identified a critical protein that could enable spillover of a family of organisms called arteriviruses.
Oct 31, 2024
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Rwandan health authorities will begin a vaccine study against the Marburg hemorrhagic fever, officials said Sunday, as the East African country tries to stop the spread of an outbreak that has killed 12 people.
Oct 6, 2024
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Marburg hemorrhagic fever has killed 11 people in Rwanda, health authorities said Thursday, as the East African country searches for the source of an outbreak first traced among patients in health facilities.
Oct 3, 2024
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The viral hemorrhagic fevers (VHFs) are a diverse group of animal and human illnesses that are caused by four distinct families of RNA viruses: the families Arenaviridae, Filoviridae, Bunyaviridae, and Flaviviridae. All types of VHF are characterized by fever and bleeding disorders and all can progress to high fever, shock and death in many cases. Some of the VHF agents cause relatively mild illnesses, such as the Scandinavian nephropathia epidemica, while others, such as the African Ebola virus, can cause severe, life-threatening disease.
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