August 24, 2011 |
The dengue fever virus, which infects 50 million to 100 million people around the world every year, might possibly yield to a little bacterium called Wolbachia, if research just published in Nature pans out. And that could be big: Researchers have been trying for years to find ways to control the mosquitoes that spread dengue fever and malaria. They've not had much luck so far. Instead of attempting to kill the dengue virus' carrier -- the mosquito Aedes aegypti -- the trick in these experiments was to infect the mosquitoes with a strain of Wolbachia . The Wolbachia doesn't kill mosquitoes, but it gets in the way of replication of the dengue virus inside the insects.
October 8, 1995 |
With a dengue fever epidemic spreading through Central America, Mexico and the Caribbean, travelers to these destinations are being urged to take precautions. Since the beginning of this year, more than 35,000 cases of dengue fever and 545 cases of its more severe form--hemorrhagic dengue--have been reported in Central America, Mexico and the Caribbean.
January 22, 2006 |
AVIAN flu is a worry, of course, if you are headed to Asia. But getting dengue fever is actually a bigger risk on the continent. In the Caribbean, you're more likely to pick up skin parasites. In sub-Saharan Africa, be wary of ticks, which spread spotted fever. The health hazards of international travel are changing, according to the results of a study published this month in the New England Journal of Medicine. "It used to be that malaria was the most common cause of fever in travelers to the tropical countries," says Dr. David O. Freedman, director of the Travelers Health Clinic at the University of Alabama at Birmingham and the lead author of the study.
January 23, 2005 |
Avian flu and SARS made headlines last year, but malaria and dengue fever should be on travelers' radar for 2005, experts say. That doesn't mean tourists should let down their guard against bird flu or severe acute respiratory syndrome, both of which may reemerge, travel medicine experts say. But several cite malaria and dengue fever as more likely threats. Top health concerns in 2005: Malaria: Until they travel overseas, most Americans don't think much about the mosquito-borne illness, says Dr. Phyllis Kozarsky, senior travelers' health consultant for the U.S. Centers for Disease Control and Prevention and a professor of medicine at Emory University in Atlanta.
September 23, 2001 |
Federal health officials confirmed that four people on Maui contracted dengue fever over the summer, the first cases of the mosquito-borne disease in Hawaii in more than 50 years, state officials said. Dengue fever is rarely fatal, and the four people confirmed to have had it have recovered. Still, state health officials are urging people in eastern Maui, a sparsely populated area that is largely rain forest, to take precautions and eliminate mosquito breeding grounds.
September 14, 1997 |
For international travelers, the risk of dengue fever--a viral disease spread by the bite of an infected mosquito--is usually low. But every year, according to the federal Centers for Disease Control and Prevention, cases of dengue, which usually is mild but can be fatal, are confirmed in travelers returning to the United States from visits to endemic areas.