Question:
Which of the following statements are correct about vaccines?
(A). Vaccines have eliminated smallpox and polio.
(B). The flu vaccine produced by Bacillus subtilis is an oral vaccine.
(C). The oral vaccines are expensive and difficult to store.
(D). The immunogenic proteins of certain pathogens are found to be active when taken orally.
Choose the correct answer from the options given below:
Which of the following statements are correct about vaccines?
(A). Vaccines have eliminated smallpox and polio.
(B). The flu vaccine produced by Bacillus subtilis is an oral vaccine.
(C). The oral vaccines are expensive and difficult to store.
(D). The immunogenic proteins of certain pathogens are found to be active when taken orally.
Choose the correct answer from the options given below:
(A). Vaccines have eliminated smallpox and polio.
(B). The flu vaccine produced by Bacillus subtilis is an oral vaccine.
(C). The oral vaccines are expensive and difficult to store.
(D). The immunogenic proteins of certain pathogens are found to be active when taken orally.
Choose the correct answer from the options given below:
Show Hint
Judge each statement. Oral vaccines are cheap and easy to store, which makes one statement false.
Updated On: Nov 12, 2026
- (A), (B) and (D) only.
- (A), (B) and (C) only.
- (A), (B), (C) and (D).
- (B), (C) and (D) only.
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Vaccines give active immunity by exposing the body to a harmless form of a pathogen or its antigen.
Step 2: Check each statement
(A) is true, as vaccination has eliminated smallpox and polio from most places.
(B) is true, as recombinant Bacillus subtilis spores have been used to make an oral flu vaccine.
(C) is false, as oral vaccines are cheap and easy to store and transport.
(D) is true, as some immunogenic proteins stay active even when swallowed.
Step 3: Select the option
Statements (A), (B) and (D) are correct, which is option A.
Final Answer:
Statements (A), (B) and (D) only are correct. \[ \boxed{\text{(A) }\text{(A), (B) and (D) only.}} \]
Vaccines give active immunity by exposing the body to a harmless form of a pathogen or its antigen.
Step 2: Check each statement
(A) is true, as vaccination has eliminated smallpox and polio from most places.
(B) is true, as recombinant Bacillus subtilis spores have been used to make an oral flu vaccine.
(C) is false, as oral vaccines are cheap and easy to store and transport.
(D) is true, as some immunogenic proteins stay active even when swallowed.
Step 3: Select the option
Statements (A), (B) and (D) are correct, which is option A.
Final Answer:
Statements (A), (B) and (D) only are correct. \[ \boxed{\text{(A) }\text{(A), (B) and (D) only.}} \]
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