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CDC

Why are Bacteria Becoming Resistant to Antibiotics? (152)

July 23, 2009

Antibiotics kill or inhibit the growth of susceptible bacteria. Sometimes one of the bacteria survives because it has the ability to neutralize or evade the effect of the antibiotic; that one bacteria can then multiply and replace all the bacteria that were killed off. Exposure …

Flies May Spread Drug-Resistant Bacteria (175)

March 17, 2009

Researchers at the Johns Hopkins Bloomberg School of Public Health found evidence that houseflies collected near broiler poultry operations may contribute to the dispersion of drug-resistant bacteria and thus increase the potential for human exposure to drug-resistant bacteria. The findings demonstrate another potential link between …

Norovirus Facts (181)

January 30, 2009

Norovirus (previously called “Norwalk-like viruses”), is an RNA virus of the Caliciviridae taxonomic family. The virus causes approximately 90% of epidemic non-bacterial outbreaks of gastroenteritis around the world, and is responsible for 50% of all foodborne outbreaks of gastroenteritis in the US.  Norovirus affects people …

Cleaning Activities May Be Harmful to Women with Asthma (182)

January 26, 2009

Cleaning activities may be associated with increased lower respiratory tract symptoms in women with asthma according to a study published in the January 2009 Annals of Allergy, Asthma & Immunology, the scientific journal of the American College of Allergy, Asthma and Immunology (ACAAI).   Jonathan …

CDC

What is Salmonellosis? (183)

January 17, 2009

Salmonellosis is an infection with bacteria called Salmonella. Most persons infected with Salmonella develop diarrhea, fever, and abdominal cramps 12 to 72 hours after infection. The illness usually lasts 4 to 7 days, and most persons recover without treatment. However, in some persons, the diarrhea …

How Bleach Kills Bacteria (192)

November 22, 2008

Developed more than 200 years ago and found in households around the world, chlorine bleach is among the most widely used disinfectants, yet scientists never have understood exactly how the familiar product kills bacteria. New research from the University of Michigan, however, reveals key details …

CDC

What is Clostridium difficile (C. difficile)? (198)

September 1, 2008

C. difficile is a spore-forming, gram-positive anaerobic bacillus that produces two exotoxins: toxin A and toxin B. It is a common cause of antibiotic-associated diarrhea (AAD). It accounts for 15-25% of all episodes of AAD. What are C. difficile-associated diseases?They are diseases that result from …