Please provide explanation with your answer. 8. The measles-mumps-rubella vaccin

Question

Please provide explanation with your answer.

8. The measles-mumps-rubella vaccine uses an attenuated virus. This is an example of what type of vaccine?

A. Natural, passive

B. Artificial, passive

C. Natural, active

D. Artificial, active

All of the following are beneficial functions of human normal microbial flora EXCEPT:

They secrete antibiotics that help combat infectious pathogens

They occupy host habitats that might otherwise be available to pathogens.

C.They may transfer antibiotic resitance genes to pathogenic taxa.

They can provide some vitamins and trace nutrients.

Explanation / Answer

8. ANS: D. Artificial, active

MMR:

The immune response is similar to natural infections. The effectiveness of live attenuated vaccine is depends on immune system. MMR is usually effective with one dose.

MMR is recommended at 12-15 months of age because the maternal antibody are effective up to 9 months of age and another will give on the time of entry of school.

9. ANS: c (They may transfer antibiotic resistance genes to pathogenic taxa).

Normal microflora which present in the gut symbiotically associate with human body. It's probiotic nature is helpful for good health. It never transfer antibiotic resistance to other pathogens.

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