First human cases occurred in Wuhan, China on November 17, 2019. First US case confirmed on January 19, 2020. WHO declared PHEIC on January 30, 2020. Pandemic officially recognized on March 11, 2020
As of December 2024, 7,078,473 confirmed COVID-induced deaths worldwide. Pandemic caused between 19.1 and 36 million deaths globally. Highest global death toll since Spanish flu and World War II
Endemic diseases are common in specific regions or populations. Examples include chickenpox in US and malaria in Asian countries. Endemic diseases maintain baseline levels without external disturbance
Epidemic describes disease outbreak spreading rapidly in limited region. Pandemic refers to global epidemic affecting multiple countries or continents. Endemic describes constant presence of disease in geographic population
Lockdown is a comprehensive measure restricting society's movement and essential services. It aims to flatten the curve of COVID-19's rapid spread. Lockdown differs from quarantine, which focuses on asymptomatic exposure