Yellow Fever News and Research

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Yellow fever virus, a flavivirus, is transmitted to humans through the bite of infected mosquitoes. Illness ranges in severity from a self-limited febrile illness to severe hepatitis and hemorrhagic fever. Yellow fever disease is diagnosed based on symptoms, physical findings, laboratory testing, and the possibility of exposure to infected mosquitoes. There is no specific treatment for yellow fever; care is based on symptoms. Steps to prevent yellow fever include use of insect repellent, protective clothing, and vaccination. Yellow fever occurs in tropical regions of Africa and in parts of South America. Yellow fever is a very rare cause of illness in U.S. travelers. The last epidemic of yellow fever in North America occurred in New Orleans in 1905.

Zika and Dengue Virus Use Different Strategies to Infect Dendritic Cells

Zika virus and dengue virus are very close relatives. Both are mosquito-borne flaviviruses, and both specialize in infecting a host's dendritic cells.

26 Mar 2025

Study Reveals T Cells as Key Players in Complete Viral Infection Control

Scientists from Duke-NUS Medical School and the Singapore General Hospital have discovered that T cells-white blood cells that can destroy harmful pathogens-can completely prevent viral infection, to an extent previously thought only possible due to neutralizing antibodies.

13 Jan 2025

CSIRO, Oxitec to Tackle Disease-Spreading Mosquitoes Threatening Mainland Australia

A new venture, Oxitec Australia, is taking on two of the deadliest virus-carrying mosquitos in the Pacific region – Aedes aegypti and Aedes albopictus – to fight the spread of diseases like dengue, Zika, and yellow fever, which claims hundreds of thousands of lives globally each year.

10 Dec 2024

Asaia Bacteria Accelerate Mosquito Larvae Growth

Mosquito larvae grow faster if they're exposed to particular bacteria, according to a new study that could help global health programmes.

5 Nov 2024

New Research Reveals Infrared Radiation as a Mosquito Host-Seeking Trigger

While a mosquito bite is often no more than a temporary bother, in many parts of the world it can be scary. One mosquito species, Aedes aegypti, spreads the viruses that cause over 100,000,000 cases of dengue, yellow fever, Zika, and other diseases every year. Another, Anopheles gambiae, spreads the parasite that causes malaria. The World Health Organization estimates that malaria alone causes more than 400,000 deaths every year. Indeed, their capacity to transmit disease has earned mosquitoes the title of deadliest animal.

23 Aug 2024