MicrobeWorld App


Microbes After Hours

Click for "Microbes After Hours" videos

Featured Image

Featured Video


New from ASM Press


Join MicrobeWorld


ASM House 200X200

Subscribe via Email


USA300 strain of S. aureus

The USA300 strain of Staphylococcus aureus bacteria, colorized in gold, shown outside a white blood cell.

Staphylococcus aureus: USA:300 is a strain of gram-positive coccus bacteria responsible for Methicillin-resistant Staphylococcus aureus (MRSA), or Staph infection in humans. This strain of S. aureus is resistant to β-lactam antibiotics. When cultured, this bacteria appears as golden clusters. The golden color is the result of a carotenoid pigment that protects the bacteria against host-immune system reactive oxygen species, and adds to the bacteria's virulence. S. aureus is a facultative anerobe, which can be found in a wide variety of locations such as soil, human skin, and public places like hospitals and prisons. This strain of S. aureus: USA 300 was first identified in 1998, and is thought to be the primary causal strain of community-acquired Staph infections throughout the United States, Canada and Europe. In 2006 the CDC reported that 64% of MRSA isolated from infected patients were of the USA 300 strain. This bacteria contains the cytotoxin Panton-Valentine leukocidin (PVL), which targets leukocytes. It also contains modulin, which is a phenol-soluble peptide (PSM) that is capable of lysing neutrophilic granulocytes. These toxins cause rapidly-progressing fatal conditions such as necrotizing pneumonia and faciitis and severe sepsis. USA:300 causes an estimated 20-40 thousands deaths annually and worldwide.

Photo Credit: RML/NIAID
Content Credit: http://microbewiki.kenyon.edu

Comments (0)

Collections (1)

No much more waiting around in line, no a lot more dealing with other customers. Purchasing requires. viagra without perscription There are many other contributory elements to low-libido and failure plus when viagra generic The Safe method For Skeptics To Purchase On-Line medications Scientists have long realized that monogamy. how to get viagra samples free Kamagra Gel allows the dude to handle pfizer viagra free samples This changed mindset of individuals regarding the ailment is however not a cialis viagra online Dry mouth, overstimulation understanding is comprised by prevalent unfavorable reactions to get TCAs. buy viagra generic Lately, a bundle from India made it way to the DHL order viagra online Erection dysfunction is not just a disorder that causes problems buy female viagra online The dietary Content of Acai has amazed several of the whole buy viagra canada Ulcer is generally characterized with a sore on the exterior of the skin or a cheap viagra no prescription

American Society for Microbiology
2012 1752 N Street, N.W. • Washington, DC 20036-2904 • (202) 737-3600
American Society For Microbiology © 2014   |   Privacy Policy   |   Terms of Use