This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
Which of the following condition is NOT caused by Parvovirus B19? 
Select and explain. 
A. Roseola infantum, B. Aplastic anemia in sickle cell disease, C. Fetal hydrops, D. Erythema infectiosum
A: Roseola infantum
Answer: A: Roseola infantum 
Explanation: Primary infection by parvovirus B19 often produces an acute, severe, and sometimes fatal anemia manifested as a rapid fall in red blood cell count and hemoglobin. These patients may present initially with no clinical symptoms other than fever; this is commonly referred to as aplastic crisis. Erythema infectiosum (also referred to as fifth disease or academy rash) is a more common disease that is clearly attributable to parvovirus B19. Active transplacental transmission of parvovirus B19 can occur during primary infections in the first 20 weeks of pregnancy, sometimes resulting in stillbih of fetuses that are profoundly anemic. The progress can be so severe that hypoxic damage to the hea, liver, and other tissues leads to extensive edema (hydrops fetalis). Reference: GHAI Essential pediatrics, 8th edition