Gynaecology & Obstetrics A primigravida in 2nd trimester became positive for toxoplasmosis. Veical transmission of toxoplasmosis MOST commonly occurs in which trimester? A 1st trimester B 2nd trimester C 3rd trimester D During delivery 💡 Explanation A primigravida in 2nd trimester became positive for toxoplasmosis. Veical transmission of toxoplasmosis MOST commonly occurs in which trimester? ✓ Correct Answer: C. 3rd trimester