CELINA- (8-11-21) Since June 16, 2021, the MCHD has reported COVID-19 vaccine breakthrough infections in each weekly COVID-19 update. For the purposes of this reporting, all fully-vaccinated individuals who are infected with COVID-19 have been reported as either confirmed or probable breakthrough cases, depending on the circumstances of each case.

As of May 1, 2021, the Centers for Disease Control and Prevention (CDC) transitioned from monitoring all reported vaccine breakthrough cases to identifying and investigating only hospitalized or fatal cases.

Ohio Department of Health (ODH) has set guidelines for health departments to report vaccine breakthrough cases to the state. The criteria are as follows:

  • COVID-19-related hospitalization or death
  • U.S. Resident
  • Completed full primary series of an FDA-authorized COVID-19 vaccine.
  • SARS-CoV-2 RNA or antigen detected on a respiratory specimen collected ≥14 days after completing the primary series of an FDA-authorized COVID-19 vaccine.
  • No known positive test for SARS-CoV-2 RNA or antigen detected on a respiratory specimen collected <45 days before the most recent positive test. 

Today, the MCHD reports eight confirmed and six probable cases of COVID-19 among fully vaccinated individuals. According to the reporting guidelines issued by ODH, only one of these people was hospitalized, meaning only one is considered a breakthrough case. To best inform our community, MCHD will continue to publicly report the overall number of cases of COVID-19 among fully vaccinated individuals in addition to the hospitalized breakthrough cases that must be reported to the Ohio Department of Health. 

COVID-19 cases have increased significantly in Mercer County in recent weeks. As of today, the transmission rate in Mercer County is high. A high transmission rate is defined as 100 or more new cases per 100,000 people in a 7-day period or a test positivity rate of 10% or higher. Mercer county has reported 82 cases per 100,000 people in the past seven days and has a test positivity rate of 10.91%.

While the COVID-19 transmission rate is at substantial or high levels, people are encouraged to wear a mask when in indoor public locations to protect themselves and others. Masks are most important when around people with weakened immune systems or increased risk of severe disease, and when distance cannot be maintained between people. While N95 masks offer protection to the wearer, surgical and cloth masks are most effective in controlling the release of droplets from those who may carry the virus by stopping the droplets before they separate into smaller particles capable of traveling through the air.

The MCHD offers the COVID-19 vaccine every Friday at the MCHD office. Please call 419-586-3251 extension 1462 to ask questions or schedule an appointment.

As of August 11, 2021, the Mercer County Health District (MCHD) reports 4,211 confirmed cases, 807 probable cases, 4,035 recovered cases, 1 hospitalization, 87 COVID-19 deaths, and 19 probable deaths of COVID-19. In addition, there have been 46 confirmed cases who have passed away due to causes other than COVID-19. Today, there are 41 known active cases of COVID-19 in Mercer County.

MonthNumber of Confirmed Cases
March (First case on 3/24)5 cases
April19 cases
May190 cases
June56 cases
July239 cases
August295 cases
September 284 cases
October545 cases
November1,116 cases
December635 cases 
January 2021388 cases
February 2021120 cases
March 202152 Cases
April 2021113 Cases
May 202164 Cases
June 202114 Cases
July 202134 Cases
August – Present42 Cases