... Otitis, and Other Upper Respiratory Tract Infections Pharyngitis, Sinusitis, Otitis, and Other Upper Respiratory Tract Infections: Introduction Infections of the upper respiratory tract (URIs) ... Chapter 031. Pharyngitis, Sinusitis, Otitis, and Other Upper Respiratory Tract Infections (Part 1) Harrison's Internal Medicine > Chapter 31. Pharyngitis, Sinusitis, Otitis, and ... examination are frequently nonspecific and unimpressive. Between 0.5 and 2% of colds are complicated by secondary bacterial infections (e.g., rhinosinusitis, otitis media, and pneumonia), particularly...