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Key words: Immunogen, adjuvant, mean tissue culture infective dose, keeping quality, rabbits.
Listeria has a relatively high infective dose, so the most effective way to control the disease listeriosis, is to limit the the Listeria monocytogenes population to less than 100 cells per gram of food.
Thus, the most important factor in lowering the infective dose that a person receives appears to be associated with an increase in gastric acidity.
Positive results for microbial indicators in drinking water most likely do not signal the presence of an infective dose of viable pathogens making an outbreak imminent, unless there is other evidence of contamination (Nwachuku et al.
Although much of the vibrio did remain free in the filtered water, their number often diminished enough to fall short of an infective dose, estimated at [10.