A 28-year-old man from Chennai presents with fever, severe headache, myalgia, and rash for 4 days. Dengue serology (NS1 antigen and IgM) ordered on day 5 of illness is negative. What is the most appropriate next investigation to confirm dengue infection?

See the options, answer & explanation

Sign in free to reveal the answer choices, the correct answer, the detailed explanation, and AI-powered insights for this question.