Visual Capitalist has some great HealthCare visualizations. This infographic does give a very nice perspective of the history of pandemics, and I noticed that the COVID numbers have been updated recently too.
COVID-19 Dashboard by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University (JHU)
Probably the most seen dashboard in 2020 during the COVID pandemic. Its fascinating how it still lives on adding more and more features all the time.