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
The virus causing aplastic crises in patients with haemolytic anaemia is 
Select and explain. 
A. Parvovirus, B. Coxsackie virus, C. Cytomegalovirus, D. Herpes virus
A: Parvovirus
Answer: A: Parvovirus 
Explanation: Parvovirus B19 is implicated in aplastic crisis in patients with hemolytic anemia, paicularly sickle cell disease. Parvovirus virus is the only DNA virus which has single-stranded DNA genome. Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 554