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.
Mosquitos spread viruses that cause potentially deadly diseases such as Zika, dengue fever and yellow fever. New U.S. Army-funded research uses gene editing to render certain male mosquitoes infertile and slow the spread of these diseases.
In a recent study, Australian scientists used an original approach to resolve the 3D structure of flaviviruses with an unprecedented level of detail, identifying small molecules known as 'pocket factors' as new therapeutic targets.
Researchers have found that AEG12, a mosquito protein, strongly suppresses the class of viruses causing dengue, yellow fever, Zika, and West Nile.
Zika outbreaks are still having lasting effects on children whose mothers were infected with the Zika virus during their pregnancy.
The yellow fever mosquito (Aedes aegypti) is the main vector of deadly diseases like dengue fever, chikungunya, and the Zika virus, which result in hundreds of thousands of deaths worldwide each year.
Yellow fever virus is normally confined to the Amazon region, but the virus circulated in the Southeast of Brazil between 2016 and 2018, causing the worst epidemic and epizootic outbreaks there for decades. The Ministry of Health confirmed 2,251 cases of yellow fever in humans and 1,567 cases in monkeys in Brazil between December 2016 and June 2019.
It's one of the world's deadliest animals, and it has a taste for human blood: the mosquito. Mosquitoes spread diseases like malaria, dengue, and yellow fever that kill at least a half a million people each year. Now researchers are learning what humans taste like to mosquitoes, down to the individual neurons that sense blood's distinctive, delectable flavor.
In the last 10 years, scientists have designed a range of novel tools that regulate the balance of genetic inheritance.
Yellow fever, a hemorrhagic disease that is common in South America and sub-Saharan Africa, infects about 200,000 people per year and causes an estimated 30,000 deaths.
A clinical case of Japanese encephalitis is diagnosed in over 68,000 individuals every year, leading to the death of one in four of these affected patients.
New research from entomologists at UC Davis clears a potential obstacle to using CRISPR-Cas9 "gene drive" technology to control mosquito-borne diseases such as malaria, dengue fever, yellow fever and Zika.