Three cities in Michigan have been identified as mosquito hotspots, ranking among the worst in the nation. Detroit, which previously held the 7th spot, has now moved down to the 8th position. Grand Rapids experienced a significant jump, moving up five spots to rank 23rd on the list. Flint also saw an increase, climbing seven spots to reach number 35 compared to the previous year's ranking. These rankings highlight the prevalence of mosquitos in these Michigan cities and the challenges they pose for residents in dealing with mosquito-related issues.