Several readers have asked us to plot the numbers for specific areas in the Keys that are seeing the largest number of positive novel coronavirus cases. These areas are particularly vulnerable to COVID-19 compared with other areas of the Keys for different reasons. Key West, of course, with its larger population and which had thousands of visitors coming in daily by air, car and boat would be expected to have the largest share of positive cases and does. But the Upper Keys areas of Key Largo and Tavernier have a relatively high percentage of cases compared to other islands.