A decade ago, Rita Colwell and colleagues at the University of Maryland discovered that Vibrio cholerae, a waterborne bacterium that
causes cholera, also becomes dormant.
Among these are members of the Vibrio family, which includes the species that
causes cholera.
Last year, for instance, a team led by aquatic ecologist Gregory Ruiz of the Smithsonian Environmental Research Center in Edgewater, Maryland, found that ballast water from ships entering the Chesapeake Bay contained Vibrio cholerae, the bacterium that
causes cholera.
Dutch researchers say the new strain arose when the bacterium that usually
causes cholera borrowed genes from a normally harmless strain.
Instead, another bacterium the team looked at, a close relative of Vibrio cholerae, the bacterium that
causes cholera, has evolved a motor with only intermediate power.
Until now, Vibrio cholerae O1 was the only organism
causing cholera epidemics.
About 80 per cent of the Anlo Beach town is currently covered in water, and NADMO fears the insanitary conditions in the area could
cause a cholera outbreak in the midst of the flood.
Another researcher, Richard A. Finkelstein, said that participation in American Society of Microbiology (ASM) meetings supported his efforts to isolate and sequence toxins that
cause cholera, a deadly intestinal disease.
Including Vibrio species, some of which can
cause cholera or food poisoning.
Richard Finkelstein had isolated the toxin from Vibrio cholerae
causing cholera.
Climate change may also cause shifts in the distribution and abundance of pathogens such as those that
cause cholera.
Not exact matches
For a century and a half, epidemiology has been an effective strategy for tracing the root
causes of infectious disease outbreaks — as John Snow demonstrated in 1854, when he painstakingly mapped cases of
cholera in London and eventually traced them to a single contaminated well and water pump in the Soho district of the city.
Cholera is an intestinal infection that is
caused by a bacteria called Vibrio
cholerae which is found in contaminated water in places with contaminated water and poor sanitation.
The symptoms and treatment of
cholera caused by the new strain (designated V.
cholerae O139) are largely the same as for «normal»
cholera.
In rural areas, where 10 % of people have adequate sanitation, people often defecate in waterways like the Meye, and
cholera — which
causes explosive diarrhea — drove more people to use the river as a toilet.
When oral hydration doesn't work for the diarrheal disease,
cholera,
caused by the comma - shaped bacterium Vibrio
cholera, can sometimes be treated by intravenous fluids and antibiotics.
Neither
cause long - lasting immunity, so children in countries with
cholera aren't routinely vaccinated, meaning the market was small and not much was made.
As a result,
cholera has spread throughout Haiti, and as of 29 November, the outbreak had
caused 1721 deaths.
He and colleagues have determined what gives
cholera bacteria their curved shape and whether it matters (a polymer protein, and it does matter; the curve makes it easier for
cholera to
cause disease), how different wavelengths of light affect movement of photosynthetic bacteria (red and green wavelengths encourage movement; blue light stops the microbes in their tracks), how bacteria coordinate cell division machinery and how photosynthetic bacteria's growth changes in light and dark.
And at Boston College, biochemist David Newburg and his colleagues have found that another oligosaccharide called 2» - fucosyllactose is effective at warding off Campylobacter,
cholera, and enteropathogenic E. coli — a frequent
cause of diarrhea — in animal models.
One aid group working in Haiti is turning to SMS text messaging to ensure Haitians are keeping their drinking water free of
cholera -
causing bacteria
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.
It is a powder - blue plastic tube — much thicker than an ordinary straw — containing filters that make water teeming with typhoid -,
cholera - and diarrhea -
causing microorganisms drinkable.
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.
Chlorine effectively kills a large variety of microbial waterborne pathogens, including those that can
cause typhoid fever, dysentery,
cholera and Legionnaires» disease.
However, some Gram - negatives
cause illnesses such as meningitis, plague, Legionnaires disease,
cholera and food poisoning.
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.
The results of two studies, published in Science, present a new «rule - book» to estimate the risk of different
cholera strains
causing an epidemic.
Cholera is
caused when the bacterium Vibrio
cholerae infects the small intestine, resulting in severe diarrhea and vomiting, which can result in dehydration and death.
It found that while
cholera was the main source of illness, rotavirus remained a «significant
cause» of diarrheal disease in children under five in Haiti.
«So it is gratifying to see our global health community with our Haitian colleagues rallying to the
cause and providing the many insights we need to not just eliminate
cholera but to conquer a wide range of water - borne diseases.»
Against conventional wisdom, they discovered
cholera to be
caused by a waterborne microbe.
He studied two types of disease -
causing bacteria, Vibrio
cholerae — the infectious agent behind
cholera — and Staphylococcus aureus, which can
cause various infections such as abscesses and hospital infections.
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.
Such «non-toxigenic»
cholera can
cause severe diarrhoea, but not epidemics, says Colin Stine of the University of Maryland Medical School in Baltimore.
But the new
cholera causes severe disease in all age groups.
The new finding, announced today in the journal Science, opens up a novel approach to designing drugs to fight other bacteria, such as those that
cause pneumonia, ear infections,
cholera and Lyme disease.
And we look at disease that
cause a lot of fluid loss through diarrhea — so, for example, take
cholera and who dies with
cholera.
The intestinal infection
caused by toxigenic Vibrio
cholerae can rapidly spread when human waste mixes with water.
Initial testing suggested an infectious bacterial disease such as avian
cholera caused the deaths, but findings released on Tuesday showed West Nile virus was the culprit, McFarlane said.
Among the arrivals they looked at were two strains of the bacterium that
causes human
cholera, Vibrio
cholerae O1 and O139.
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.
Cholera,
caused by the bacterium Vibrio
cholerae, produces watery diarrhea that can lead to dehydration and death.
Cholera is an acute diarrhoeal disease
caused by ingesting food or water contaminated with the bacterium, Vibrio
cholerae.
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.
The bacterium that
causes the human disease
cholera can be transported in ballast water.
In addition to havoc
caused by floods and mudslides, El Niño can
cause secondary effects; for example, El Niño was implicated in increased cases of
cholera in Peru in 1991 and 1998.
Another example related to improperly treated or untreated sewage is Vibrio
cholerae, the bacterium that
causes the intestinal infection
cholera.