Bad Bug Book U.S. Food & Drug Administration
Center for Food Safety & Applied Nutrition

Foodborne Pathogenic Microorganisms
and Natural Toxins Handbook
 

Infective Dose Information

Most chapters include a statement on infectious dose. These numbers should be viewed with caution for any of the following reasons:

Variables of the Parasite or Microorganism

Variables of the Host

Because of the complexity of factors involved in making risk decisions, the multidisciplinary Health Hazard Evaluation Board judges each situation on all available facts.

December 1991

mow@cfsan.fda.gov



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