Sentences with phrase «humans by mosquitoes»

Malaria is caused by a parasite and transmitted to humans by mosquitoes.

Malaria is caused by Plasmodium, a microscopic parasite spread to humans by mosquitoes.

Benzoquinoline was also effective against vesicular stomatitis virus from the rhabdovirus family, which can infect insects, cattle, horses and pigs, and Zika virus, which is spread to humans by mosquitoes.

West Nile is transmitted to humans by mosquitoes that have bitten infected birds.

Malaria is caused by Plasmodium parasites that are transmitted to humans by a mosquito bite, leading to 219 million documented cases and 627,000 deaths worldwide in 2012.

Not exact matches

Zika is carried by mosquitoes, which transmit the virus to humans.

What an American doctor trained on the mainland might see as a case of the flu could actually be Chikungunya, a viral disease transmitted to humans by infected mosquitoes.

«If the mosquito transmission cycle gets knocked down by the storms and has to re-amplify, there may not be enough time after October,» said Scott Weaver, director of University of Texas Medical Branch's Institute for Human Infections and Immunity.

«But Charles Darwin showed how it is possible for blind physical forces to mimic the effects of conscious design, and, by operating as a cumulative filter of chance variations, to lead eventually to organized and adaptive complexity, to mosquitoes and mammoths, to humans and therefore, indirectly, to books and computers.

When a human host is bitten by an infected mosquito, the parasite (Plasmodium) enters the blood and lays inactive in the liver.

By tapping existing compounds known to block one class of olfactory neurons, scientists might be able to better camouflage humans from mosquito detection or draw mosquitoes away from humans with chemical bait.

Zika virus, which spreads among humans via mosquitoes, causes illness characterized like many other viral infections by fever, rash and joint pain.

This trial of OX513A mosquitoes, genetically engineered by the British company Oxitec, «would be unlikely to result in adverse effects on the environment or human health,» the FDA ruled.

Chikungunya, dengue and Zika viruses are transmitted to humans by Aedes aegypti mosquitoes, which live in tropical, subtropical, and in some temperate climates.

There is currently no Zika vaccine, so preventing mosquito bites and using condoms — the virus can also be spread by human sexual contact — remain the predominant ways to combat its spread.

Waiting with bated breath: Opportunistic orientation to human odor in the malaria mosquito, Anopheles gambiae, is modulated by minute changes in carbon dioxide concentration.

HUMANS AND PARASITES I read with interest in Mary Carmichael's «Halting the World's Most Lethal Parasite» the idea of vaccinating mosquitoes by using a human carrier to pass the vaccine on to the mosquito.

Malaria, a scourge on human society that still kills more than 400,000 people a year, is often thought to be of more modern origin — ranging from 15,000 to 8 million years old, caused primarily by one genus of protozoa, Plasmodium, and spread by anopheline mosquitoes.

It's very unlikely that she was infected by a bite by a mosquito that first bit her husband; the three tropical Aedes mosquito species known to transmit Zika don't live in northern Colorado, and moreover, the virus has to complete a 2 - week life cycle within the insect before it can infect the next human; Foy's wife fell ill just 9 days after his return.

This will provide information that could be used to illuminate how malaria — a disease which causes more than half a million deaths a year — is spread from human to human by parasite - infected female mosquitoes which bite people to feed on blood they need in order to reproduce.

In a study published in PLOS ONE today, a team of researchers led by the London School of Hygiene & Tropical Medicine show for the first time that female mosquitoes infected with malaria parasites are significantly more attracted to human odour than uninfected mosquitoes.

This summer, Kappe and colleagues will expose a dozen human volunteers to vaccine - harboring mosquitoes, followed eventually by a batch of bugs with the full - strength malaria parasite.

«This highlights the need to derive new indices to be considered by operational mosquito control programs, categorizing neighborhoods on the basis of both mosquito surveillance counts and human outdoor exposure risk,» the researchers say.

Thus, gene drive could be used to reduce malaria transmission in humans — or in endangered birds (see image, above)-- by making the mosquito vectors incapable of spreading the malaria parasite or even eliminating the insects altogether.

Although the orchid's «body odor» is barely detectable by humans, it does set off electrical activity in the mosquito's antennae, indicating it may very well attract the insects.

Mosquitoes acquire viruses by feeding on the blood of humans who are sickened with them.

Mosquito - borne human diseases such as Zika virus, dengue fever and malaria are promoted by both heat and standing water, and could be exacerbated by warm - wet extremes.

HIV - infected humans actually have very few virus particles in their bloodstream, and should a mosquito suck one up, it gets killed by the mosquito's digestive system.

West Nile virus has wreaked havoc mostly on bird populations, but humans and a variety of other animals can become infected as well when bitten by a mosquito that previously dined on an infected bird.

But since 2015 Zika has ricocheted to more than 40 countries, transmitted by mosquito bite or human sexual contact.

In addition to their role in ecosystems, amphibians also help humans by controlling insect populations — including the mosquitoes that spread diseases like Zika and dengue fever.

The approach enabled a wide range of studies of human brain development, including implicating a new class of neural stem cell recently discovered by the lab in the evolutionary expansion of the human brain and identifying how the mosquito - borne Zika virus may contribute to microcephaly in infants infected in utero.

Samples from 910 humans in Salvador, northeast Brazil, were tested for Zika virus antibodies as well as for other viruses transmitted by mosquitoes — such as Chikungunya and dengue.

For their studies on a species of human malaria that is also carried by monkeys, as part of a larger project funded by the UK Research Council Living with Environmental Change initiative, Fornace and her colleagues are using a drone to map changes in mosquito and monkey habitats and correlate how those changes affect human infection.

While the total number of human bites was highest in low - income areas, the proportion of mosquitoes feeding on people (50 %, by Ae.

You know, a human being has something about her that is shared by a mosquito, in [an] elephants, in [an] orchid, but which is not shared by other things in nature, like a hurricane or a rock.

When an infected female mosquito bites a human, the microbe enters the victim's bloodstream and makes for the liver, where it multiplies by the tens of thousands.

Humans and cats each made up 13.3 % of Aedes blood meals, while deer and dogs were bitten less frequently by all mosquito species.

When the dengue virus is transmitted to a healthy person, the change in the temperature of the host — from 28 degree Celsius in a mosquito to 37 degree Celsius in a human body — causes the virus to swell by 20 per cent.

Previous research led by Vazquez - Prokopec showed that contact tracing of human cases of dengue fever, combined with indoor residual spraying for Aedes mosquitoes in homes, provided a significant reduction in the transmission of dengue during an outbreak.

Our meetings examined the variety of new genetic techniques developed to cure human malaria and Zika virus by eliminating mosquitos — such as Oxitec's sterile males, wolbachia applications, and gene drives — and looked at how they might be applied to protect Hawaiian birds.

In a presentation titled «Paradise Regained,» the team at the Genomic Solutions workshop proposed deploying a technique used by the British firm Oxitec in Brazil to defeat mosquitoes carrying human dengue fever.

Zika, which is transmitted by mosquitoes and can cause severe birth defects in humans, has been particularly devastating in several South American countries and the Caribbean.

Zika is a viral disease that humans can contract after being bitten by mosquitoes.

About a week after the P. falciparum parasite is injected by a mosquito into a human body, it attaches to and infects the red blood cells.

Dr. Shresta and her team have isolated new DENV and ZIKV strains in mice by adapting viral isolates from humans and mosquitoes into peripheral tissues of mice.

The scientists tested the response of these mosquitoes to skin odorants by placing them in a wind tunnel with a plate of glass beads that had been worn in socks for several hours to give them the scent of human foot odor.

While the bad breath and body odor that garlic consumption can cause may be unappealing, insects are even more repelled by it than humans, which makes it an effective natural mosquito repellent.

It is transmitted by mosquitoes — which feed on infected birds or other animals — to horses, humans and other mammals.

Zoonoses are distinctly different from diseases affecting both humans and animals, such as West Nile virus or Lyme disease, which are transmitted by a mosquito carrying the West Nile virus or a tick carrying Lyme disease, respectively.