Resumen de Breaking Down COVID-19: A living textbook

Carey Kriz, Naiyer Imam, Sarah Zaidi

• The world is amidst a pandemic that is presenting one of the greatest public health challenges of the twenty-first century. A new coronavirus has jumped the interspecies barrier, and it possesses the capability of efficient person-to-person transmission and selectively kills older people and those with underlying chronic conditions. Since its emergence the new coronavirus has resulted in 43.7 million infections and over 1 million deaths as of October 25, 2020—20% of deaths are in the United States followed by Brazil (14%), India (10%), Mexico (7.8%), and the United Kingdom (4%).