http://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (Phys.org)—Salmonella typhi is a particularly nasty bacterium that targets only humans and causes typhoid fever, which kills hundreds of thousands of people annually. In a new study appearing in the Nov. 16 issue of the journal Science, Yale scientists explain how evolution shaped the pathogen to be so selective. http://phys.org/news272222522.html Biology Thu, 15 Nov 2012 17:22:13 EST news272222522 A new study by researchers at Imperial College London has identified a way in which Salmonella bacteria, which cause gastroenteritis and typhoid fever, counteract the defence mechanisms of human cells. http://phys.org/news272210045.html Biology Thu, 15 Nov 2012 14:00:41 EST news272210045 Salmonella Typhi (S. Typhi) is the causative agent of typhoid fever, a serious health threat resulting in some 22 million new cases yearly and approximately 217,000 fatalities. A number of novel vaccine candidates using live attenuated strains of Salmonella are being developed, but care must be taken to ensure the bacteria are not excreted into the environment following vaccination. http://phys.org/news260094853.html Biology Thu, 28 Jun 2012 09:35:27 EST news260094853 In recent years, it has become clear that food poisoning due to Salmonella typhimurium can be contracted not only by uncooked eggs and meat but also through eating contaminated raw vegetables and fruit. So far, it was unclear how these bacteria can infect humans and plants alike. A team associating researchers from INRA, CNRS and the Universities of Evry (France), Giessen (Germany) and Vienna (Austria), has shown that Salmonella suppress the defense systems of plants and humans by a similar mechanism. Moreover, the teams showed that plants contaminated with Salmonella are highly infectious to human cells and mice. The results were published in PLoS ONE on September 6, 2011. http://phys.org/news235123732.html Biology Tue, 13 Sep 2011 09:09:07 EST news235123732 The death of a scientist who caught the plague in a laboratory in 2009 shook the disease research community. It was the first such death of a researcher, and 50 years since the last known lab-acquired case of plague. http://phys.org/news219681695.html Medicine & Health Fri, 18 Mar 2011 17:50:01 EST news219681695 The potentially deadly bacterium Salmonella possesses a molecular machine that marshals the proteins it needs to hijack cellular mechanisms and infect millions worldwide. http://phys.org/news215964840.html Biology Thu, 03 Feb 2011 14:14:27 EST news215964840 Better treatments and prevention for typhoid fever may emerge from a laboratory model that has just been developed for the disease. The model is based on transplanting human immune stem cells from umbilical cord blood into mice that are susceptible to infections. http://phys.org/news204387011.html Medicine & Health Wed, 22 Sep 2010 15:40:09 EST news204387011 (AP) -- Fruiti Pops, Inc. of Santa Fe Springs has recalled its mamey (mah-MAY') frozen fruit bars because of a possible link to a rare U.S. outbreak of typhoid fever. http://phys.org/news202103812.html Medicine & Health Fri, 27 Aug 2010 05:20:01 EST news202103812 There's a potential threat lurking in your internet café, say University of Calgary computer science researchers. It's called Typhoid adware and works in similar fashion to Typhoid Mary, the first identified healthy carrier of typhoid fever who spread the disease to dozens of people in the New York area in the early 1900s. http://phys.org/news193660194.html Technology Fri, 21 May 2010 11:30:25 EST news193660194 A new study suggests that the bacteria that cause typhoid fever collect in tiny but persistent communities on gallstones, making the infection particularly hard to fight in so-called "carriers" - people who have the disease but show no symptoms. http://phys.org/news186072281.html Medicine & Health Mon, 22 Feb 2010 15:00:13 EST news186072281 India's giant Tata Group on Monday unveiled a new low-cost water purifier, hoping to do for health what it did for motoring and provide affordable, safe drinking water for millions and cut disease. http://phys.org/news179390123.html Technology Mon, 07 Dec 2009 06:36:53 EST news179390123 (PhysOrg.com) -- Depending on your genes, Salmonella can mean a lot more than food poisoning. In a new clinical study, researchers at The Rockefeller University Hospital are narrowing in on the genetic link that predisposes a person to a set of complications known as severe nontyphoidal salmonellosis (SNTS). The study will analyze medical records and blood samples of SNTS-diagnosed children and may clarify the role of genetics in the immune system’s various responses to Salmonella infection and lead to more efficient treatments for the disease. http://phys.org/news173635029.html Medicine & Health Thu, 01 Oct 2009 16:58:38 EST news173635029 Infection with an antimicrobial-resistant strain of typhoid fever among patients in the United States is associated with international travel, especially to the Indian subcontinent (India, Pakistan, and Bangladesh), according to a study in the August 26 issue of JAMA. The study also shows an increase in certain strains of typhoid fever that are resistant to the most commonly used medications for treatment. http://phys.org/news170438721.html Medicine & Health Tue, 25 Aug 2009 17:50:01 EST news170438721 A new study has found that a currently available yet underused vaccine against typhoid fever is highly effective in young children and protects unvaccinated neighbors of vaccinees. http://phys.org/news167503072.html Medicine & Health Wed, 22 Jul 2009 18:40:02 EST news167503072 (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 factors, play a sophisticated game of mimicry, imitating many of the cells’ normal activities but ultimately co-opting them to serve the bacteria’s needs. Now researchers at The Rockefeller University have identified a new class of these coup artists that appear to take over a key process that regulates a wide range of cellular duties, from cell-cycle progression to cell death, even communication between cells. http://phys.org/news155317992.html Chemistry Tue, 03 Mar 2009 15:54:34 EST news155317992