Two-for-one bacterial virulence factor revealed

We've all seen the headlines. "Man found to be shedding virulent strain of polio"; "Virulent flu strain in Europe hits the economy"; "Most virulent strain of E. coli ever seen contains DNA sequences from plague bacteria."

Scarlet fever pathogen draft genome sequence released

Scarlet fever has revealed unusual high infect rate in Hong Kong this year. So far, 466 children were infected and 2 of them dead. Scarlet fever is caused by Streptococcus pyogenes, a gram-positive pathogen that can be transmitted ...

New Method Tests Severity of Key Citrus Virus

(PhysOrg.com) -- A new rapid way to test severity of the devastating citrus tristeza virus (CTV) in citrus trees has been developed by Agricultural Research Service (ARS) scientists in Parlier, Calif. The results of this ...

New protein identified in bacterial arsenal

(PhysOrg.com) -- Nearly a billion years ago, bacteria evolved an insidious means of infecting their hosts — a syringe-like mechanism able to inject cells with stealthy hijacker molecules. These molecules, called virulence ...

Unusual bacteria help balance the immune system in mice

Medical researchers have long suspected that obscure bacteria living within the intestinal tract may help keep the human immune system in balance. An international collaboration co-led by scientists at NYU Langone Medical ...

How mice survive infection by virulent Toxoplasma parasites

One of the commonest parasites in the world is Toxoplasma gondii. Toxoplasma can infect most warm-blooded animals, including humans, and causes significant damage to the unborn child if a woman becomes infected for the first ...

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