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: Microbiology
[{'content': 'Parvovirus B19 does not cause : \nSelect and explain. \nA. Roseola infantum, B. Aplastic anemia in sickle cell, C. Fetal hydrops, D. Collapsing FSGS', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Roseola infantum or exanthem subitum is caused by HHV 6 and HHV-7 (rarely).\nDiseases caused by Parvo virus :\n\nErythema infectiosum\nSeronegative arthritis\nAplastic crisis in hemolytic anaemia\nFetal infection leads to non-immunohydrops fetalis\nChronic anaemia in immunocompromised\nHemophagocytic syndrome\nSevere anaemia in malarial patients.', 'role': 'assistant'}]