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Latest yellow fever Stories

2011-02-07 16:55:16

A five-week old infant most likely contracted a vaccine strain of yellow fever virus through breastfeeding, according to a case report published in CMAJ (Canadian Medical Association Journal) (pre-embargo link only) http://www.cmaj.ca/embargo/cmaj100619.pdf "Until recently, avoidance of vaccination of breastfeeding women with yellow fever vaccine had been based on theoretical grounds only," writes Dr. Susan Kuhn, with coauthors. "We report the probable transmission of vaccine strain of yellow...

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2010-12-03 10:06:50

Alexander Raikhel's lab identifies a microRNA molecule that controls blood feeding and egg development in Aedes aegypti femalesEach 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.Now...

2010-08-10 13:42:00

SOMERSET, N.J., Aug. 10 /PRNewswire-FirstCall/ -- Tamir Biotechnology, Inc. (Pink Sheets: ACEL) (formerly Alfacell Corporation) announced today that scientists supported by the National Institute of Allergy and Infectious Diseases (NIAID) confirmed that testing of three (3) of our company's compounds showed in vitro results rarely seen before by the U.S. government for yellow fever. In order to determine the effectiveness of a compound, NIAID uses a Selectivity Index (SI). The SI measures...

2010-03-09 11:10:22

The potentially deadly yellow-fever-transmitting Aedes aegypti mosquito detects the specific chemical structure of a compound called octenol as one way to find a mammalian host for a blood meal, Agricultural Research Service (ARS) scientists report. Scientists have long known that mosquitoes can detect octenol, but this most recent finding by ARS entomologists Joseph Dickens and Jonathan Bohbot explains in greater detail how Ae. aegypti--and possibly other mosquito species--accomplish this....

2010-03-04 08:10:00

ITHACA, N.Y. -- Cornell researchers have found a protein that may lead to a new way to control mosquitoes that spread dengue fever, yellow fever and other diseases when they feed on humans: Prevent them from urinating as they feed on blood. The work may lead to the development of new insecticides to disrupt the mosquito's renal system, which contributes to a mosquito's survival after feeding on blood. Aedes aegypti mosquitoes transmit the virus that causes dengue fever, putting 40...

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2009-11-17 15:06:31

The World Health Organization is set to launch the largest-ever vaccination campaign against yellow fever in three African countries. Next week, WHO, UNICEF, national Red Cross and Red Crescent Societies, M©decins sans Frontires and other partners will be taking part in a mass vaccination campaign in an effort to help 11.9 million people in Benin, Liberia and Sierra Leone, where the highest risk of yellow fever has been reported. Agencies taking part in the campaign will also be handing...

2009-01-05 12:29:30

A half-dozen monkeys apparently died of yellow fever in Argentina, but health officials say a major outbreak of the disease among humans is unlikely. However, the discovery of the dead simians by local sanitation authorities in Corrientes province, near Argentina's northeastern borders with Brazil and Paraguay, follows the confirmed yellow fever deaths of two jungle workers in neighboring Misiones province, Mercopress reported Monday. Corrientes province sanitation officials said there is no...

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2008-11-24 11:23:59

In the first study of its kind, researchers at the Yerkes National Primate Research Center and Emory Vaccine Center, Emory University, have developed a multidisciplinary approach involving immunology, genomics and bioinformatics to predict the immunity of a vaccine without exposing individuals to infection. This approach addresses a long-standing challenge in the development of vaccines--that of only being able to determine immunity or effectiveness long after vaccination and, often, only...

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2008-01-16 11:20:00

Few things sting like a mosquito's bite -- especially if that bite carries a disease such as malaria, yellow fever, Dengue fever or West Nile virus. But if researchers from The University of Arizona in Tucson have their way, one day mosquito bites may prove deadly to the mosquitoes as well. "Our goal is to turn the female mosquito's blood meal into the last meal she ever eats," said project leader Roger L. Miesfeld, a professor of biochemistry and molecular biophysics in UA's College of...

2006-02-27 18:37:34

By Kevin Krolicki DETROIT (Reuters) - Louisiana, struggling to rebuild from Hurricane Katrina, now faces a potential scourge of mosquitoes as insects hatch in storm-created breeding grounds, scientists said on Monday. The expected surge in the mosquito population this summer around New Orleans raises worries about the risk of an accompanying increase in cases of the mosquito-borne West Nile virus, public health officials said. "The mosquitoes have just taken off," said Janet...


Latest yellow fever Reference Libraries

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2011-03-04 17:38:30

Yellow fever is an acute viral hemorrhagic disease with a 40 to 50 nm enveloped RNA virus with positive sense of the Flaviviridae family. It is transmitted by the bite of female mosquitoes and is found in tropical and subtropical areas in South America and Africa, but not in Asia. Primates and a few kinds of mosquitoes are the only known hosts. The origin of the disease is most likely Africa. From there it was introduced to South America through the slave trade in the 16th century. There...

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