An enteroaggregative Verotoxin (Vtx)-producing Escherichia coli strain of serotype O104:H4 has recently been associated with an outbreak of haemolytic-uremic syndrome and bloody diarrhoea in humans mainly in Germany, but also in 14 other European countries, USA and Canada. This O104:H4 E. coli strain has often been described as an enterohaemorrhagic E. coli (EHEC), i.e. a Vtx-producing E. coli with attaching and effacing properties. Although...
Shiga toxin-producing E. coli (STEC) are the most virulent diarrhoeagenic E. coli known to date. They can be spread with alarming ease via food as exemplified by a large sprout-borne outbreak of STEC O104:H4 in 2011 that was centered in northern Germany ...
What physical mechanism leads to organization of a highly condensed and confined circular chromosome? Computational modeling shows that confinement-induced organization is able to overcome the chromosome's propensity to mix by the formation of topological domains. The experimentally observed high precision of separate subcellular positioning of loci (located on different chromosomal domains) in Escherichia coli naturally emerges as a result of...
Do dog owners deal with their animals’ solid excreta? Pollution control people say that pet waste is a major source of e. coli in the Rivanna River. The City provides bags at the river trail entrance with instructions. However, it seems that step five, "Tie knot in bag and dispose in any trash or Dogipot container," is often ignored. Some dog walkers say that they leave the filled bags, walk a few miles, and then fetch the bags on their...
Background:
In situation like diagnosis of clinical and forensic samples there exists a need for highly sensitive, rapid and specific DNA detection methods. Though conventional DNA amplification using PCR can provide fast results, it is not widely practised in diagnostic laboratories partially because it requires skilled personnel and expensive equipment. To overcome these limitations nanoparticles have been explored as signalling probes for...
A community portal about Escherichia coli with blogs, videos, and photos. According to Wikipedia.org: Escherichia coli, usually abbreviated to E. coli, was discovered by Theodor Escherich, a German pediatrician and bacteriologist. It is one of the main species of bacteria living in the lower intestines of mammals, known as gut flora. The number...more
A community portal about Escherichia coli with blogs, videos, and photos. According to Wikipedia.org: Escherichia coli, usually abbreviated to E. coli, was discovered by Theodor Escherich, a German pediatrician and bacteriologist. It is one of the main species of bacteria living in the lower intestines of mammals, known as gut flora. The number of individual E. coli bacteria in the feces that a human excretes in one day averages between 100 billion and 10 trillion, however the bacteria is not confined to this environment, and specimens have also been located on the edge of hot springs. The E. coli strain O157:H7 is one of hundreds of strains of the bacterium E. coli that causes illness in humans, according to US Department of Health and Human Services Centers for Disease Control and Prevention.