SawaalBoxसवाल बॉक्स
2010 · Q21Science & TechnologyHealth & Diseasesmoderate

Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine ?

  1. (a)Malaria is caused by several species of Plasmodium
  2. (b)Man does not develop immunity to malaria during natural infection
  3. (c)Vaccines can be developed only against bacteria
  4. (d)Man is only an intermediate host and not the definitive host
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Official answer(b) Man does not develop immunity to malaria during natural infection

2022 · Q39Science & TechnologyHealth & Diseasesmoderate

In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements : 1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform. 2. Sputnik V vaccine is manufactured using vector based platform. 3. COVAXIN is an inactivated pathogen based vaccine. Which of the statements given above are correct ?

  1. (a)1 and 2 only
  2. (b)2 and 3 only
  3. (c)1 and 3 only
  4. (d)1, 2 and 3
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Official answer(b) 2 and 3 only