## **Core Concept**
The International Health Regulations (IHR) Act aims to prevent the international spread of disease while minimizing interference with international traffic. Specific guidelines regarding air travel during pregnancy are crucial for ensuring the health and safety of both the mother and the fetus.

## **Why the Correct Answer is Right**
The correct answer, , indicates that a pregnant woman at or beyond 36 weeks of gestation is generally not allowed to travel by air to another country. This restriction is primarily due to the increased risk of labor and potential complications that may arise during flight. Airlines and international health regulations often have specific policies regarding pregnancy and air travel, with 36 weeks being a common threshold for restrictions on singleton pregnancies.

## **Why Each Wrong Option is Incorrect**
- **Option A:** is incorrect because being under 28 weeks, the pregnant woman is not typically restricted from air travel based on gestational age alone, assuming there are no complications.
- **Option B:** is incorrect because, although some airlines may have policies, 32 weeks is generally not a universally recognized cutoff for travel restrictions.
- **Option D:** is incorrect because, for many airlines and health regulations, 40 weeks would indeed be a point where travel is highly restricted or not recommended, but specific policies can vary.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that while 36 weeks is a common threshold, policies can vary by airline and specific health conditions. Pregnant women should always check with their airline and healthcare provider before traveling.

## **Correct Answer:** .