This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Veical transmission is by - 
Select and explain. 
A. Mosquitoes, B. Direct contact, C. Droplet, D. Placenta
D: Placenta
Answer: D: Placenta 
Explanation: Ans. is 'd' i.e., Placenta Modes of transmission o Communicable disease may be transmitted from the reservoir or source of infection to a susceptible host in many different ways. Modes of transmisstion Direct transmission Indirect transmission Direct contact o Vehicle - borne Droplet infection o Vector - borne Contact with soil o Air - borne Inoculation into skin or mucosa o Fomite - borne Transplacental (veical) o Uncleaned hands & fingers