Live attenuated vaccines are used to treat all of the following diseases except:
Correct answer: C. Cholera and rabies
- A. Typhoid and plague
- B. Polio and measles
- C. Cholera and rabies
- D. Mumps and influenza
Explanation
Live attenuated vaccines are designed to provoke a strong immune response by using a weakened form of the virus. They are used for diseases like measles, mumps, and polio. However, cholera and rabies vaccines do not typically use live attenuated strains. Cholera vaccines are usually inactivated, while rabies vaccines are inactivated or recombinant. Understanding the specific vaccines available for each disease is crucial for answering this question correctly.
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Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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