Figures show the number of Covid cases across every Hertsmere neighbourhood over the whole pandemic The Hertsmere towns, villages, and wards which have seen the most and fewest number of Covid-19 cases since the pandemic began have been revealed. The data shows broadly, Borehamwood has recorded the most cases (2,700+), followed by Bushey (2,100+) and nearly 1,600 in Potters Bar. Most recent figures, published last week by Public Health England, also shows the picture in every single neighbourhood in Hertsmere between April 2020 and April 2021. The data is broken down by individual neighbourhoods, that are officially known as Middle Super Output Area (MSOA) areas, with an average population of 7,200 - although some MSOA's are slightly larger or smaller.