Which of the following parasites' eggs hatch and migrate into the nasal chambers and sinuses?

• A. Taenia solium
• B. Syngamus trachea
• C. Oestrus ovis
• D. Ascaris lumbricoides

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the life cycle and infection route of each parasite listed to determine which one involves egg hatching and migration into the nasal chambers and sinuses.
2. Step 2: Recall that Taenia solium is a tapeworm whose eggs hatch in the intestine, not the nasal area, so it can be excluded.
3. Step 3: Know that Syngamus trachea is a parasite of birds that infects the trachea, but its eggs do not hatch and migrate into nasal sinuses in mammals.
4. Step 4: Recognize that Oestrus ovis, also known as the sheep nasal botfly, lays larvae (not eggs) that hatch and migrate into the nasal passages and sinuses of sheep, causing myiasis.
5. Step 5: Understand that Ascaris lumbricoides eggs hatch in the intestine and larvae migrate through the lungs but not into nasal sinuses, so it is not the correct answer.