FRASER BROTH BASE, MODIFIED (HALF FRASER BROTH)

Fraser Broth Base, modified is based on the formulation by Fraser and Sperber. It is recommended for selective enrichment of Listeria species from foods.
Listeria species are widely distributed and are isolated from soil, decaying vegetable matter, sewage, water, animal feed, fresh and frozen poultry, meats, raw milk, cheese and asymptomatic human and animal carriers. Only Listeria monocytogenes from the genus Listeria; causes infections in humans. L. monocytogenes primarily causes meningitis, encephalitis or septicemia in humans. In pregnant women, Listeria monocytogenes often causes an influenza like bacteremic illness that, if untreated, may lead to ammionitis and infection of the fetus, resulting in abortion, still birth or premature birth. Contaminated foods are the primary vehicles of transmission.

for the selective enrichment of Listeria species from foods