2024 PN NCLEX Questions Nursing Practice Question
Which of the following vaccines is a live virus?
Correct Answer: A
Rationale: Varicella, or the chickenpox vaccine, contains a live attenuated virus, which means it uses a weakened form of the virus to stimulate an immune response without causing the disease.
In contrast, IPV (Inactivated Polio Vaccine) uses killed virus particles, making it non-infectious. DTaP (Diphtheria, Tetanus, and Pertussis) is a combination vaccine that contains inactivated toxins and components of bacteria, not live viruses. Hepatitis B vaccine is made from a recombinant protein and does not contain live virus either. Thus, only varicella utilizes a live virus to confer immunity.