**Core Concept**
The protective value of a vaccine refers to its efficacy in preventing a disease, which is typically expressed as a percentage. In this case, the vaccine has a 95% protective value, implying that a significant majority of individuals who receive the vaccine will be protected against the disease.

**Why the Correct Answer is Right**
The correct answer, **B. 5 among 100 have the probability of getting infected after vaccination**, accurately reflects the concept of vaccine efficacy. When a vaccine has a 95% protective value, it means that 95% of the individuals vaccinated will be protected against the disease, leaving 5% who may still be susceptible to infection. This is because the vaccine is not 100% effective, and some individuals may not respond to the vaccine or may have underlying conditions that make them more susceptible to the disease.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it implies that all individuals who receive the vaccine will be protected, which is not the case. Vaccine efficacy is a statistical measure that accounts for variability in individual responses to the vaccine.

**Option C:** This option is incorrect because it misrepresents the concept of vaccine efficacy. The protective value of a vaccine refers to the percentage of individuals who are protected against the disease, not the percentage of individuals who are not susceptible to the injections. Injections are a means of administering the vaccine, not the disease itself.

**Option D:** This option is incorrect because it implies that the vaccine is 100% effective, which is not the case. The correct answer reflects the fact that even with a 95% protective value, 5% of individuals who receive the vaccine may still be susceptible to the disease.

**Clinical Pearl / High-Yield Fact**
When evaluating the efficacy of a vaccine, it's essential to understand that the protective value is a statistical measure that accounts for variability in individual responses to the vaccine. This means that even with a high protective value, some individuals may still be susceptible to the disease.

✓ Correct Answer: B. 5 among 100 have the probability of getting infected after vaccination