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: Unknown
[{'content': '24 hours after fever, maculopapular rash and erythema appears on the face of infant.  This organism can also cause \nSelect and explain. \nA. ALL, B. CML, C. Pure red cell aplasia, D. Hairy cell leukemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: It’s caused by Parvo B19 virus, and it causes the following diseases\n\nErythema infectiosum\nFifth disease.\nSlapped cheek appearances.\nArthropathy.\nTransient Aplastic crisis.\nHydrops fetalis (most sensitive period 2nd trimester)\nMyocarditis.\nPPGSS\nPapular - Purpuric Gloves & Stock Syndrome.\n\n\xa0\nTransient Aplastic Crisis\n\nThe transient arrest of erythropoiesis and absolute reticulocytopenia.\nRBC aplasia or transient aplastic crisis in patients with chronic hemolytic conditions, including:\n\n\nSickle cell disease.\nThalassemia.\nHereditary spherocytosis.\nPyruvate kinase deficiency.\n\n\nIn contrast to children with erythema infectiosum only, patients with aplastic crisis are ill with fever, malaise, and lethargy and have signs and symptoms of profound anemia, including pallor, tachycardia and tachypnea.\nThe incubation period tor transient aplastic crisis is shorter than that for erythema infectiosum because the crisis occurs coincident with the viremia.\nChildren with sickle cell disease may also have a concurrent vasoocclusive pain crisis.', 'role': 'assistant'}]