convert                 convert
get_global_data         Query the global data online
get_history_data        Query the historical data online
get_latest_data         Query the latest data online
get_nCov2019            Query the latest data
get_therapeutics_data   Query the therapeutics info online
get_vaccine_data        Query the vaccine info online
load_nCov2019           Query the latest data
open_dashboard          Shiny app
plot.nCov2019           plot.nCov2019
query                   Query COVID-19 related statistic data
