How Contagious Is COVID-19 Compared To Other Diseases?: Infographic
COVID-19 seems to be more contagious than the recent Ebola virus that affected Africa but less infectious the SARS epidemic. Polio, Smallpox, etc. are also more infectious than the current Covid-19 virus. The following chart compares how infectious COVID-19 is relative to other diseases: Click to enlarge Source: RFE/RL