system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A previously healthy 32-year-old male comes to the emergency department because of a high-grade fever and malaise for 3 days. He has severe generalized joint and body pains refractory to acetaminophen. He also has a severe stabbing pain behind his eyes. He returned from a trip to Taiwan 1 week ago. He is sexually active and uses condoms inconsistently. His temperature is 38.7°C (101.7°F), pulse is 102/min, and blood pressure is 100/70 mm Hg. Examination shows nontender inguinal lymphadenopathy. There is a maculopapular rash over the trunk and extremities with some sparing of the skin over his back and groin. Abdominal examination shows no abnormalities. Laboratory studies show:
Hemoglobin 13.3 g/dL
Leukocyte count 3,900/mm3
Platelet count 90,000/mm3
Serum
Na+ 136 mEq/L
Cl- 103 mEq/L
K+ 4.2 mEq/L
Urea nitrogen 15 mg/dL
Creatinine 1.2 mg/dL
Bilirubin
Total 0.4 mg/dL
Direct 0.1 mg/dL
Alkaline phosphatase 40 U/L
AST 130 U/L
ALT 60 U/L
Urinalysis is normal. An ELISA test for HIV is negative. Which of the following measures is most likely to have prevented this patient’s condition?"
assistant
Mosquito repellent