CALIFORNIA, Mo. - On Monday, the Moniteau County Health Center posted on Facebook about the increasing COVID-19 positivity rates in the county, which were at 17.5% at that time. âIt hasn't been this high since mid-January 2021,â the health center wrote. âPLEASE get vaccinated against COVID. The vaccine is highly effective and safe!â Moniteau County currently has 26% of the population initiating the vaccine process, and 23.7% of the population is fully vaccinated, according to the state data. Moniteau County is ranked No. 7 in Missouri of jurisdictions with the highest positivity rate, according to the same state data. Many business owners and residents were unaware of the high positivity rate when asked on Tuesday.