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Question: Possible Short Answer Questions for the Second Exam 1. Which is more specific, an enzyme-linked i...

Possible Short Answer Questions for the Second Exam

3. Define incidence and prevalence of disease. Name a microbial disease for which the numerical values of annual incidence and annual prevalence are likely similar and name another microbial disease for which the numerical values of annual incidence and annual prevalence are likely quite different; explain why this is the case for both diseases.

9. Define incidence and prevalence of disease. Name a microbial disease for which the numerical values of annual incidence and annual prevalence are likely similar and name another microbial disease for which the numerical values of annual incidence and annual prevalence are likely quite different; explain why this is the case for both diseases.

11. Define the ID50 and LD50 of a microbe in an animal model of human disease using mice. How is each value determined?

Answer 1

11. ID50(infectious dose 50) defnition of infectious dose 50 by medical dictionary.

The quantity to be administered at one time, as a specific amount of medication or a given quantity of radiation.

Absorbed dose

Air dose

Booster dose

Curative dose

Divided dose

Effective dose

Erythema dose

Fatal dose

Fractionated dose

Infective dose

Lethal dose

Loading dose

Maintainace dose

Maximum tolerated dose

Maximum permissible dose

Refference dose

Skin dose

Threshold dose

LD50 is an abbrevation of lethal dose, 50% or media lethal dose, it is the amount of the substances requred to kill 50% of the test population. the test was created.

LD50 is measured in microorganisms(or milligrams) of the material per kilogram of the test animals body weight; lower the amount, more toxic the material. used in comparision of toxicities, LD50 values cannot be directly extrapolated from one species to the other or to humans also called median lethal dose.