The Rock County Health Department is once again recommending everyone, including those vaccinated against COVID-19, to wear masks indoors in public settings.  Health Officer Katrina Harwood says the recommendation follows updated guidance from the CDC.  Harwood says the recent increase in the local rate of infection now ranks Rock County in the CDC’s substantial transmission category.  She says the resurgence of infections is generally attributed to the unvaccinated.  The health department intends to evaluate the need to update the guidance weekly.