Macomb County Health Officer Andrew Cox said this is the next step to ensure all vulnerable population groups can have safe access to the vaccine right here at home. DETROIT – On Saturday, the Macomb County Health Department announced the expansion of priority groups eligible to receive the COVID-19 vaccine. “We are encouraged to see a number of positive trends with our vaccination strategy here in Macomb County,” said Macomb County Executive, Mark Hackel. Flashpoint 3/14/21: Energy secretary Jennifer Granholm, county leaders to weigh in on crucial issuesAdMacomb County Health Officer, Andrew Cox, said this is the next step to ensure all vulnerable population groups can have safe access to the vaccine. Michigan announced Friday that all residents age 16 and up will become eligible for the COVID-19 vaccine on April 5, nearly a month before the May 1 date pledged by President Joe Biden.