Tag: "mosquitoes" at medical news

10 years before malaria vaccine is ready for widespread use

...nteers exposed experimentally to bites by infected mosquitoes and in semi-immune adults in The Gambia exposed to natural infection. (See Lancet 2001; 358: 1927-34) In a subsequent trial in Mozambican children, the RTS, S/AS02 vaccine gave 30% protection against the first clinical episode of malaria and 58% prot...

Reducing malarial transmission in Africa

...metocytes carried and how able they were to infect mosquitoes 7 days later was also reduced by the six dose regimen. Although the results are promising, some patients may have difficulty taking a six-dose regimen, and as it also needs oily food for adequate absorption there might be inadequate drug levels in th...

New partnership launched to accelerate and evaluate national malaria control program in Africa

...atment, combined with a series of measures to keep mosquitoes away from their human prey, will save lives and reduce illness. And yet effective malaria control has proved a challenge, particularly in Africa, where the disease burden continues to grow. The burden of the disease is straining health systems across...

Not enough is known about treating malaria in pregnancy, researchers say

...ws that pregnant women attract twice the number of mosquitoes as non-pregnant women, which probably increases their risk of contracting malaria. The disease can cause severe anemia and parasitic infection in the fetus and increase the risks of preterm birth and maternal death. "Clearly, more trials are needed e...

Researchers discover how malaria parasite disperses from red blood cells

...s part of its life cycle in the salivary glands of mosquitoes and is transmitted to human beings through the bite of infected mosquitoes. The parasite infects red blood cells. Called a merozoite at the stage of its life when it infects red blood cells, the parasite multiplies inside the cell, until the cell r...

Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses

... ways depending on whether they are transmitted by mosquitoes or ticks. This finding could lead to new approaches to developing vaccines and treatments against these illnesses. "Flaviviruses exact an enormous toll in terms of illness and death worldwide," notes NIAID Director Anthony S. Fauci, M.D. "Because thi...

KwaZulu-Natal's successful fight against malaria

...in 2000 alongside an intensified effort to control mosquitoes with insecticides. Reviewing data from four health care facilities representative of the province, the researchers found that admissions for malaria had declined by 89% in the year following the changes. By 2003 the decline in malaria had been sustai...

Study shows escalating climate change impacts

... the breeding and range of disease vectors such as mosquitoes responsible for malaria, which currently kills 3,000 African children a day, and West Nile virus, which costs the US $500 million in 1999. Lyme disease, the most widespread vector-borne disease, is currently increasing in North America as winters war...

Malaria risk it's not all in the genes

...ic areas". Factors such as suitable conditions for mosquitoes to breed and survive as well as human behaviour are likely to play major roles. "We need to determine what makes the difference between low-risk and high-risk households", Mackinnon says, "but whatever it is, it seems likely to be an easy target usi...

Shift in feeding behavior of mosquitoes sheds light on West Nile virus outbreaks

...eople infected. The virus is transmitted by Culex mosquitoes (the "vector") and cycles between birds that the mosquitoes feed on. Humans can also be infected with the virus when bitten by these mosquitoes. Scientists ...

Global program to eliminate elephantiasis has early success in Egypt

...er the fifth round of MDA. A test for infection in mosquitoes also showed infection rates plummeted after MDA. Two of the four villages studied did not quite achieve elimination targets after 5 years of MDA; they will receive a sixth round of treatments in 2006 to ensure that the parasite is eliminated. Asses...

Yellow Fever

... one-to-two degree warming enables disease-bearing mosquitoes to move into areas once protected by colder weather. He concludes with a discussion of current precautionary efforts based on interviews with experts and analysis of available studies. Both absorbing history and a timely wake-up call for the present,...

How bad is malaria anemia? It may depend on your genes

...by mosquito bites, and in parts of the world where mosquitoes thrive, millions are infected, most of them by early childhood. Once in the bloodstream, plasmodium invades liver and red blood cells and makes more copies of itself. Eventually, as red cells break and free plasmodium to infect other cells, and as th...

Increase in counterfeit antimalarial drugs prompts call for crackdown, better detection

...n the United States. The disease -- transmitted by mosquitoes infected with the parasite Plasmodium falciparum -- infects 300 to 500 million people a year. Each year, about 1.5 million of those mostly children die even though genuine anti-malarial drugs are quite effective. One of the most efficacious drugs i...

Hopkins researchers develop new quick tool to sort out insect bites in children

...ly. "Common sense might tell us that fleas and mosquitoes would affect other members of the family, but we must keep in mind that these rashes develop in children who have hypersensitivity that others do not have," Hernandez said. ...

University of Leeds receives Gates Foundation grant for material approach to malaria prevention

...m insecticides has the added benefit of preventing mosquitoes from becoming resistant to these chemicals. Dr R...e a more sustainable way of protecting people from mosquitoes and we hope could go some way to preventing some of the one million plus deaths from malaria seen ...

Sustainability of energy, food and water theme of ACS national meeting

...tames the beast: Folk remedy shows promise against mosquitoes Chemicals extracted from the leaves of the American beautyberry, once used as a Southern folk-remedy to keep insects from biting, show promise in lab studies as natural mosquito repellants that may be as effective as DEET, one of the most widely use...

Malaria-infected mice cured by 1 dose of new drug

...rasite that causes the disease is spread by female mosquitoes feeding on human blood. The most commonly fatal species of the malaria parasite now shows strong resistance to most current treatments, making the development of effective new drugs a worldwide priority. Since 1992, Posner and his team, which incl...

HIV and malaria combine to adversely affect pregnant women and their infants

...egions. Malaria is a parasitic disease spread by mosquitoes that kills more than one million people every year. While the disease affects mostly children, malaria also severely affects pregnant women, especially during their first pregnancy, accounting for an estimated 400,000 cases of severe anaemia and 200,...

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