This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious disease, Subject name: Pediatrics
[{'content': 'Diagnosis of toxoplasmosis in newborn is done by? \nSelect and explain. \nA. IgG antibody against toxoplasma, B. IgM antibodies to toxoplasma, C. IgA antibodies to toxoplasma, D. IgE antibodies to toxoplasma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: - The classical triad of congenital toxoplasmosis is intracranial calcification, hydrocephalus and chorioretinitis. - Diagnosis is confirmed by demonstrating a positive toxoplasma IgM in serum of the affected child. Reference : Ghai essential pediatrics, eighth edition, pg no:272', 'role': 'assistant'}]