Characteristics of and Important Lessons From the Coronavirus Disease 2019 (COVID-19) Outbreak in China

Summary of a Report of 72 314 Cases From the Chinese Center for Disease Control and Prevention

72 314 Cases (as of February 11, 2020)

• • Confirmed cases: 44 672 (62%)

  • Suspected cases: 16 186 (22%)

  • Diagnosed cases: 10 567 (15%)

  • Asymptomatic cases: 889 (1%)

• Age distribution (N = 44 672)

  • ≥80 years: 3% (1408 cases)

  • 30-79 years: 87% (38 680 cases)

  • 20-29 years: 8% (3619 cases)

  • 10-19 years: 1% (549 cases)

  • <10 years: 1% (416 cases)

• Spectrum of disease (N = 44 415)

  • Mild: 81% (36 160 cases)

  • Severe: 14% (6168 cases)

  • Critical: 5% (2087 cases)

• Case-fatality rate

  • 2.3% (1023 of 44 672 confirmed cases)

  • 14.8% in patients aged ≥80 years (208 of 1408)

  • 8.0% in patients aged 70-79 years (312 of 3918)

  • 49.0% in critical cases (1023 of 2087)

• Health care personnel infected

  • 3.8% (1716 of 44 672)

  • 63% in Wuhan (1080 of 1716)

  • 14.8% cases classified as severe or critical (247 of 1668)

  • 5 deaths