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.

Disrupting protein components kills mosquitoes

Mosquitoes die soon after a blood meal if certain protein components are experimentally disrupted, a team of biochemists at the University of Arizona has discovered.

18 Jul 2011

Rapid method can predict immune responses against flu vaccines

Researchers at the Emory Vaccine Center have developed a method for predicting whether someone will produce high levels of antibodies against a flu shot a few days after vaccination.

12 Jul 2011

Dengue virus circulating between monkeys, mosquitoes could emerge to cause human outbreaks

More than a thousand years ago, somewhere in Southeast Asia, a fateful meeting occurred between a mosquito-borne virus that infected mainly monkeys and a large, susceptible group of humans.

14 Jun 2011

GAVI welcomes lower pentavalent vaccine price

In the lead up to its first pledging conference on June 13, the GAVI Alliance announced today it has achieved commitments from two emerging market vaccine manufacturers to lower prices for the life-saving pentavalent vaccine, which protects against five deadly diseases. Developed country manufacturers have also offered price reductions on rotavirus and human papillomavirus, or HPV, vaccines.

5 Jun 2011

New study identifies odor molecules that disrupt CO2-sensing machinery of mosquitoes

Female blood-feeding mosquitoes, some species of which can transmit deadly diseases such as malaria and dengue to humans, largely find their human blood meals by detecting carbon dioxide emitted when people exhale.

2 Jun 2011

Viewpoints: Sebelius on medical mistakes; Stockman on solving deficit; Fox on Medicare's political history

A recent study found that as many as one out of three hospital patients is harmed by his or her care. And the Institute of Medicine estimates that as many as 100,000 Americans die each year from preventable medical errors in hospitals. That's about the number of annual deaths caused by auto accidents, AIDS, and breast cancer combined.

26 Apr 2011

Ahead of Immunization Week, WHO calls for countries to come together to control measles outbreak in Europe

WHO is urging countries in Europe to join together to help control the measles outbreak that has grown to more than 6,500 cases in 33 countries and the potential for worsening outbreaks "in the days ahead as people travel during the Easter holidays," U.N. News Centre reports.

25 Apr 2011

Study unravels how interferon-induced factors inhibit viruses

When viruses attack, one molecule more than any other fights back. Interferon triggers the activation of more than 350 genes, and despite the obvious connection, the vast majority have never been tested for antiviral properties.

11 Apr 2011

Strong 'innate immunity' effective in chikungunya patients

Chikungunya is transmitted by mosquitoes of the genus Aedes. The disease is spreading in the world and periodically sparks new outbreaks. Africa, Asia, the Indian Ocean and even Southern Europe are now affected.

23 Mar 2011

New study on mosquito genome sequences to identify 'transposable elements'

A team of scientists at the University of California, Riverside has begun working on a mosquito research project that, if successful, will provide valuable genetic resources capable of transforming the way mosquito research is conducted around the world.

14 Feb 2011

Vaccination campaigns to stop yellow fever spread get underway in E. Africa

Individuals traveling across East Africa on Friday were ordered to begin receiving mandatory yellow fever vaccines in an effort "to contain an outbreak of the disease in Uganda," which has sickened an estimated 190 people, resulting in 48 deaths as of Dec. 30, 2010, the Citizen reports (Ubwani, 1/22).

25 Jan 2011

Opinions: GAVI; Haitian women; Clinton's foreign policy

"Vaccines are among the greatest scientific contributions to human welfare. They are also some of the largest humanitarian contributions of developed nations to the rest of the world. So it is unfortunate that a decade of vaccine controversy has overshadowed a decade of vaccine miracles," Washington Post columnist Michael Gerson writes in an opinion piece reflecting on the contributions of the GAVI Alliance over the past decade.

21 Jan 2011

iBio grants commercial, royalty-bearing license to Fiocruz/Bio-Manguinhos for new yellow fever vaccine

iBio, Inc. today announced the grant of a commercial, royalty-bearing license to Fiocruz/Bio-Manguinhos of Brazil to develop, manufacture and sell certain vaccines based upon iBio's proprietary technology. Fiocruz/Bio-Manguinhos will invest more than $6 million to bring the first product - a new yellow fever vaccine - through Phase I clinical trials.

18 Jan 2011

Washington Post examines theories on climate change's potential impact on disease spread

The Washington Post examines the debate among scientists over the impact climate change might have on the spread of infectious diseases, and the potential for a rise in the number of tropical diseases in the U.S. The article describes how extreme weather conditions, such as flooding and drought - "thought to be linked to the warming of the oceans and to changes in the precipitation cycle" - can create ideal conditions for waterborne disease.

13 Jan 2011

Met-FISC complex formation critical step in juvenile hormone signaling pathway

Just as raging hormones are part of the process of a child's maturation through the teen years to adulthood, juvenile hormones, a group of insect isoprenoids, play an important role as butterflies, fruit flies and mosquitoes transform their body structures as they molt from larva to pupa and then adults.

28 Dec 2010

MicroRNA linked to mosquito blood digestion and egg development identified

Each year, dengue fever infects as many as 100 million people while yellow fever is responsible for about 30,000 deaths worldwide. Both diseases are spread by infected female Aedes aegypti mosquitoes, which require vertebrate blood to produce eggs. The blood feeding and the egg development are tightly linked to how the mosquito transmits the disease-causing virus.

2 Dec 2010

NIAID scientists confirm antiviral activity of two lead compounds against HPV

Tamir Biotechnology, Inc. announced today that scientists supported by the National Institute of Allergy and Infectious Diseases (NIAID) reported test results confirming two of our lead compounds showed excellent in vitro antiviral activity and no cellular toxicity at dose levels tested for Human Papillomavirus (HPV).

30 Nov 2010

Viruses lead to discovery of security system in host cells

Viruses have led scientists at Washington University School of Medicine in St. Louis to the discovery of a security system in host cells.

18 Nov 2010

VaxInnate’s prototype flu vaccine named as Top 10 Infectious Diseases Projects to Watch in 2011

VaxInnate Corporation announced today that VAX125, its investigational prototype vaccine for seasonal flu, has been named one of the Top 10 Infectious Diseases Projects to Watch in 2011 by Elsevier Business Intelligence and the Windhover Conferences.

2 Nov 2010

NIH awards two new grants to develop Avidocin platform

AvidBiotics today announced the receipt of two new grants totaling $1 million dollars from the National Institutes of Health that further the development of the company's novel Avidocin™ platform for narrow spectrum antibacterial proteins against important health care threats. These grants add to three previous grants covering AvidBiotics' anti-infectious disease technologies, which provide approximately $3.4 million in currently active funding for the company.

15 Oct 2010