This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Vaccination causing intussusception is 
Select and explain. 
A. Rotavirus, B. Parvovirus, C. Poliovirus, D. BCG
A: Rotavirus
Answer: A: Rotavirus 
Explanation: Rotavirus vaccination - there is a potentially high risk of intussusception with the first dose when this vaccine is given to infants aged more than 12weeks. Ref: Park&;s textbook of preventive and social medicine; 23rd edition.