The first graphic is a bar graph showing that 80.9 percent of novel coronavirus cases are mild, 13.8 percent are severe, requiring hospitalization, and 4.7 percent are critical, requiring intensive ...
Ziyad Al-Aly is chief of research and development at VA St. Louis Health Care System and a clinical epidemiologist at Washington University in St. Louis. Since 2020, the condition known as long ...
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