This Public Health England map shows which the number of cases in each ward in our area. The dark blue represents Leggatts ward in North Watford A cluster of coronavirus cases identified in Watford last week have been linked to one particular neighbourhood, a map has shown. Watford’s coronavirus case rate has risen over the last week or so – now the second highest in the south of England – prompting Hertfordshire County Council to issue a 'Covid alert' ahead of the bank holiday weekend. The county’s director of public health, Jim McManus, told the Observer on Friday that cases had been recorded across the town; however a government map updated today shows one of Watford’s 12 wards is more affected than anywhere else.