Dengue virus

A 51-year-old woman comes to the emergency department for evaluation of myalgias, fever, and a petechial rash for the past two days. She recently returned from a ten-day trip to West Africa. She states she had similar symptoms three years ago, resolved with supportive care at home. The patient's temperature is 39.4 °C (102.9 °F). Pulse is 100/min, respiratory rate 17/min, and blood pressure 90/50 mmHg. She develops petechial lesions over the distal right arm after a blood pressure measurement is obtained using a sphygmomanometer. The remainder of the physical examination is within normal limits. Initial laboratory workup is shown below. Which of the following is the most likely diagnosis?