Figure. Clinical course of 29 patients infected with highly pathogenic avian influenza virus (H5N1), northern Vietnam, 2004–2005. Zero days on horizontal axis represent days of hospitalization at the National Institute of Infectious and Tropical Diseases. Shaded bars, days between disease onset and hospitalization; open bars, days between hospitalization and discharge; dots, start of oseltamivir treatment. Information on the right shows date of hospitalization, age in years, sex, and leukocyte count per microliter.