BCG is given
**Core Concept**
The BCG (Bacillus Calmette-Guérin) vaccine is a **vaccine** used primarily against **tuberculosis (TB)**. It is a **live, attenuated vaccine** made from a weakened form of **Mycobacterium bovis**.
**Why the Correct Answer is Right**
Since the options are missing, let's discuss the general principle behind BCG administration. BCG vaccine is given to provide immunity against **tuberculosis**, especially in regions with high prevalence. It is typically administered via an **intradermal injection**.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific option, it's challenging to provide a detailed explanation.
**Option B:** Similarly, without the text, it's impossible to assess its accuracy.
**Option C:** And **Option D:** lack context for a proper evaluation.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that BCG vaccine is most effective in preventing **severe forms of TB**, such as **TB meningitis**, in **children**.
**Correct Answer:** D. at birth