*Users could use the button of the first graph to check the time series of different nursing house COVID-19 data.
*From the second graph, users are able to observe the trend of full vaccination rates of residents and staffs of nursing houses. It also shows the occupancy (how many percentage of beds has been occupied by residents). Users can hover on the line to check the specific rate at each date.
*The combination of two graphs can help users understand the relationship between each factor and COVID-19 cases of nursing houses.