A 21-year-old male from Nepal, with a history of travel to Mumbai 2 months ago, presented with fever with chills and rigors, vomiting and multiple joint pain for 1 week. Clinical examination was noteworthy for tachycardia, hypotension and positive tourniquet test. Lab reports showed NS1-Ag positive, thrombocytopenia, lymphocytosis, transaminesemia, hyperbilirubinemia, increased urea and creatinine. He was treated for severe dengue. His laboratory parameters started improving; however, he had fever with chills and rigors daily and persistent vomiting. Repeat peripheral smear for Malaria showed schizonts and trophozoites of Plasmodium vivax. He recovered following treatment with IV fluids and injection artesunate. The presence of fever even in a critical phase of dengue, the typical rise of temperature daily, and jaundice gave a clue of coinfection with Malaria. On follow-up, after 2 weeks, he had no symptoms, and all the laboratory parameters were normal.
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