UPDATE 4:25 P.M.: Columbia/Boone County Public Health and Human Services said COVID-19 cases rose by 11 over the last 24 hours and active cases fell by 20.
As of Monday, the total number of coronavirus cases was at 1,061 with 166 of those being active. Active COVID-19 cases topped out at 186 on Sunday.
The health department said 1,051 was the sum of all COVID-19 cases on Sunday since the pandemic started. Workers clarified in Monday's tweet that a case recorded on Saturday was removed from the county's data.
The tweet included 892 have recovered from the virus.
The county's COVID-19 dashboard said the positivity rate for Boone County was at 7.2% for last week. As of Monday, the health department hadn't updated the positivity rate for the current week.
The health department provided some initial information about how masks have affected the county's positivity rate. According to an infographic, the positivity rate at its peak of 16% when Columbia leaders approved the mask ordinance.
The health department said it will continue to monitor the data on how masks could affect the rate and that it was too early to tell if masks will have any long-term effects on the data.
UPDATE 2:24 P.M.: The Missouri Department of Health and Senior Services said statewide COVID-19 cases were up to 43,050 after an increase of more than 1,100 on Monday.
The health department tweeted Monday afternoon COVID-19 cases increased by 1,123, keeping up with 1,000-plus increases over the past six days.
Health department workers included COVID-19 deaths rose to 1,201, up four over the last 24 hours.
The average coronavirus case increase since July 20 was 1,244.5. The tweet said the seven-day percent increase was up to 8.6% on Monday.
The state's COVID-19 dashboard said cases increased 0.3% over the last 24 hours and 6.6% over the last week. It included the average age of COVID-19 patients was 43-years-old.
At least 641,904 Missourians have been tested for COVID-19 since the pandemic started.
Cooper County adds COVID-19 cases, health center worker tests positive for coronavirus
The Cooper County Public Health Center said confirmed COVID-19 cases topped out at 81 on Sunday.
On Monday, the health center lobby was locked and workers were only able to provide a limited set of resources after a staff member tested positive for COVID-19 on Saturday.
As of Sunday, Cooper County had 41 active COVID-19 cases and 40 recovered. The county added 10 new cases from Saturday, the health center's website said.
According to a release on the health center website, four people were contacted about potential exposure to COVID-19 after the worker tested positive.
All workers were tested for COVID-19 and were awaiting their results on Monday, the release said.
It included other staff members didn't meet close contact requirements because workers were wearing masks and gloves, and had less than 15 mintues of interaction with the other staffer.
Workers won't schedule any new appointments this week, the release said. The health center's lobby will be blocked off to the public until Friday.