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Question

Pregnant women are not advised to have certain vaccinations such as MMR, chicken pox etc., while some vaccinations such as DPT are considered to be harmless. Give reasons.​

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Solution

  • MMR and chickenpox vaccines contain live attenuated germs, hence there is a risk of pathogens crossing the placenta and resulting in infection of foetus. ​

  • Whereas DPT vaccine is made from toxoids, inactive toxic substances extracted from pathogens, hence the risk of foetus getting infected is low. ​

  • Therefore, pregnant women are advised not to have vaccines containing live pathogens whereas the vaccines containing killed pathogens/toxoids are safe.


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