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FDA

N95 Respirators

April 27, 2009

Surgical masks and surgical N95 respirators are disposable devices that cover the mouth and nose during medical procedures. They help protect the caregiver and patient against microorganisms, body fluids, and small particles in the air. Surgical masks and surgical N95 respirators are regulated by the …

FDA

Clostridium perfringens – Overview

November 7, 2007

Clostridium perfringens is an anaerobic, Gram-positive, sporeforming rod (anaerobic means unable to grow in the presence of free oxygen). It is widely distributed in the environment and frequently occurs in the intestines of humans and many domestic and feral animals. Spores of the organism persist …

FDA

Listeria monocytogenes – Overview

November 7, 2007

This is a Gram-positive bacterium, motile by means of flagella. Some studies suggest that 1-10% of humans may be intestinal carriers of L. monocytogenes. It has been found in at least 37 mammalian species, both domestic and feral, as well as at least 17 species …

FDA

Salmonella – Overview

November 3, 2007

Salmonella is a rod-shaped, motile bacterium – nonmotile exceptions S. gallinarum and S. pullorum – nonsporeforming and Gram-negative. There is a widespread occurrence in animals, especially in poultry and swine. Environmental sources of the organism include water, soil, insects, factory surfaces, kitchen surfaces, animal feces, …

FDA

Clostridium botulinum – Overview

November 3, 2007

Clostridium botulinum is an anaerobic, Gram-positive, spore-forming rod that produces a potent neurotoxin. The spores are heat-resistant and can survive in foods that are incorrectly or minimally processed. Seven types (A, B, C, D, E, F and G) of botulism are recognized, based on the …

FDA

Staphylococcus aureus – Overview

November 3, 2007

S. aureus is a spherical bacterium (coccus) which on microscopic examination appears in pairs, short chains, or bunched, grape-like clusters. These organisms are Gram-positive. Some strains are capable of producing a highly heat-stable protein toxin that causes illness in humans.   Name of Acute Disease …

FDA

Campylobacter jejuni – Overview

November 3, 2007

Campylobacter jejuni is a Gram-negative slender, curved, and motile rod. It is a microaerophilic organism, which means it has a requirement for reduced levels of oxygen. It is relatively fragile, and sensitive to environmental stresses (e.g., 21% oxygen, drying, heating, disinfectants, acidic conditions). Because of …