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Which of the following has some risk when a person's immune system is weakened? a:Live virus...

Which of the following has some risk when a person's immune system is weakened?

a:Live virus vaccines

b:Killed (inactivated) vaccines

c:Toxoid vaccines

d:Biosynthetic vaccines

Science   Biology   
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Answer #1

Option a) Live virus vaccines....................is the right answer.

Reason : In case of a person with weak immune system, live vaccines can sometimes be fatal. Because, as these type of vaccines are not totally compromised in relation to their pathogenic potential, can still cause the disease under suitable condition. On the other hand, killed, toxoid and biosynthetic vaccines loss their pathogenicity inspite of having immunogenic potential, so are used in persons with weak immune system.

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