A 20-year-old woman complains of fever of 39°C, headache in the frontal region, pain in the eyes, photosensitivity, muscle pain, and dry cough. According to the patient's medical history, she became acutely ill the day before. Objectively, her condition is severe, her face is hyperemic, her eyes are shiny, with injected sclerae. Pulse 96/min, rhythmic. Heart sounds are muffled. Scattered dry crackles can be heard in the lungs. The oropharyngeal mucosa is hyperemic, granular, with dilated vessels. There are no meningeal symptoms. Complete blood count: leukocytes - 13.0*109/L, eosinophils - 1%, band neutrophils - 6%, segmented neutrophils - 51%, lymphocytes - 35%, monocytes - 7%. What is the most likely diagnosis in this case?