Breakthrough COVID-19 cases have, unfortunately, become much more common during the recent outbreak of the omicron variant. The reason for this is because the omicron variant is much more transmissible than previous variants, due to its different mutations. This, in turn, makes it more able to escape the passive immunity that is provided from vaccinations. To learn more about breakthrough COVID-19 cases, read on as our AFC Urgent Care Athens, TN provides some helpful info ...