COVID learn links
https://lukas-jue.github.io/data-science-covid-guide/
https://jaferezrubio.netlify.app/pandemic_covid_spain.html
https://rpubs.com/rdwinkelman/covid19_ohio_gifs
https://mc-stan.org/users/documentation/
https://rpubs.com/bgautijonsson/HierarchicalLogisticGrowthCurves
https://mine-cetinkaya-rundel.github.io/covid19-r/
http://r-statistics.co/Time-Series-Analysis-With-R.html
https://a-little-book-of-r-for-time-series.readthedocs.io/en/latest/src/timeseries.html