Sentences with phrase «cholera strains»

The results of two studies, published in Science (10 November), present a new «rule - book» to estimate the risk of different cholera strains causing an epidemic.

The results of two studies, published in Science, present a new «rule - book» to estimate the risk of different cholera strains causing an epidemic.

Recent genomic advances are contributing to our understanding of the emergence and spread of a multidrug - resistant cholera strain [78], for example, and helping to identify variants that might account for differences in host susceptibility to other waterborne infections such as schistosomiasis [79], [80].

Not exact matches

The symptoms and treatment of cholera caused by the new strain (designated V. cholerae O139) are largely the same as for «normal» cholera.

This is because while many adults in areas where there have been V. cholerae O1 epidemics have developed some immunity to this strain, they lack immunity to the new O139 vibrio.

Some came from Nepal, where cholera is endemic, and although they showed no symptoms of cholera, genetic fingerprinting has matched the strain of cholera in Haiti to the strain prevalent in Southeast Asia.

Genetically, the Haiti strain is very similar to South Asian strains of V. cholerae.

While the new discovery confirms scientists» ideas about the evolution of disease, the worrying implication is that the same process could cause other virulent strains of cholera to emerge at any time.

Although the cholera bacterium, Vibrio cholerae, is usually thought of as a disease - causing organism, most strains never infect people and live freely in estuaries and other brackish waters.

So when a large number of cholera cases caused by a new strain named O139 started turning up in India, WHO officials were understandably alarmed.

So people who have built up immunity to cholera could not fight off the new strain because their immune systems were fooled into ignoring the bacterium.

Mooi and his colleagues have looked at the DNA of free - living V. cholerae, and found that the different strains seem to have exchanged genes on a fairly regular basis.

Dutch researchers say the new strain arose when the bacterium that usually causes cholera borrowed genes from a normally harmless strain.

In Latin America, the team not only focused on the 7PET strains that cause epidemics, but other strains of Vibrio cholerae that cause sporadic low level disease.

This allowed the researchers to uncover that different strains of Vibrio cholerae can be assigned different risks for causing large outbreaks.

Epidemiological and DNA studies have shown that the outbreak was caused by the «El Tor» strain of Vibrio cholerae bacteria probably carried by Nepalese peacekeepers.

But Rita Colwell of Johns Hopkins University in Baltimore, Maryland, and colleagues report this week that of faecal samples taken from 81 people in November 2010, 17 had a different V. cholerae that does not make the deadly toxin made by the El Tor strain.

Better sanitation is imperative in the fight against cholera in Haiti & ndash particularly as a strain impervious to proposed vaccinations has been found

What is more, the DNA in Haiti's cholera shows it was a single, recent introduction of a strain from south Asia, though we don't know if it is circulating in Nepal.

Around a decade later an unknown ship, probably from the Bay of Bengal, discharged ballast water into the coastal waters of Peru, releasing a strain of cholera that contaminated shellfish.

Among the arrivals they looked at were two strains of the bacterium that causes human cholera, Vibrio cholerae O1 and O139.

Although no cases of cholera were reported in Alabama, ballast - water samples collected later contained the epidemic - causing strain of cholera, and this incident highlighted the capability of ballast water to transport pathogens.

Circumstantial evidence suggests that a previously unreported strain of cholera found in oysters and fish - gut contents in Mobile Bay, Alabama during 1991, was transported there by ballast water from ships that arrived from Latin America, which had an ongoing cholera epidemic.

Conclusions: We conclude that genetically related V. cholerae cluster in outbreaks, and distinct strains circulate simultaneously.

V. cholerae successfully persist in aquatic environment and its pathogenic strains results in sever enteric disease in humans.

The current, seventh cholera pandemic (marked by a new strain of the bacteria) began in Asia in 1961 and has since spread to Africa and the Americas.

Recently, the Centers for Disease Control and Prevention (CDC) published a travel notice warning travelers of an epidemic strain of cholera in Haiti.