This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intestinal Infections, Worm Infestations, Subject name: Social & Preventive Medicine
Peri-natal transmission of hepatitis B is maximum in: 
Select and explain. 
A. 1st trimester, B. 2nd trimester, C. 3rd trimester, D. During labour and delivery
C: 3rd trimester
Answer: C: 3rd trimester 
Explanation: Peri-natal transmission of hepatitis B is maximum in 3rd trimester. Maximum chances of perinatal transmission :- Disease Maximum chances Varicella 1 trimester Rubella 1 trimester Syphilis III trimester Toxoplasmosis III trimester Hepatitis B III trimester HIV During delivery