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Vaccination and Immunisation

Which of the ...

Question

Which of the following is an example of passive immunity?

A

Transfer of antibodies from mother to fetus via the placenta

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B

Transfer of antibodies via colostrum in breast fed babies

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C

Administer antitoxin in case of snake bite

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D

All of the above

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Solution

The correct option is D
All of the above

Passive immunity is generated wherein the antibody is generated in some other person and these antibodies are in turn transferred to another individual. This confers the recipient with immunity to a disease that the person did not experience. Passive immunity is naturally transferred to breast fed babies from their mother's milk. Breast milk has colostrum that contains antibodies against pathogens the mother has been exposed to. Transfer of antibodies that occurs from mother to foetus via the placenta is also an example here.Other applications are in case of snake bites or other poisoning where the immunity has to be conferred immediately.

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Q. How many statements given below are the examples of "Naturally Acquired Passive Immunity".
A. In case of snake bites, the injection which is given to the patients, contain preformed antibodies against the snake venom.
B. The fetus recieves some antibodies from their mother through the placenta during pregnancy
C. Colostrum secreted by mother during the initial day of lactation has abundant antibodies to protect the infant.
D. 'ATS' (Anti-tetanus serum) provides temporary protection in case of injuries and burns

Q. How many statements given below are correct?
A. In case of snake bites, the injection which is given to the patients, contain preformed antibodies against the snake venom.
B. The fetus receives some antibodies from their mother through the placenta during pregnancy.
C. Colostrum secreted by mother during the initial days of lactation has abundant antibodies to protect the infant.
D. 'ATS' (Anti-tetanus serum) provides temporary protection in case of injuries and burns.

Q. The transfer of antibodies from a pregnant mother to her fetus is a type of

Q. Immunity obtained by the transfer of antibodies from the mother through the placenta by the foetus is

Q. Assertion: Artificial passive immunity results when ready made antibodies produced outside the host are introduced into the body.
Reason: In case of snakebites, the injection given to the patient contains readymade antibodies to fight against the snake venom. It is an example of artificial passive immunity.

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