Two cases are under investigation to determine the sources of transmission.
Of the 171 total cases, 89 Winneshiek County residents have recovered from COVID-19, while one person has died.
That leaves 913 active cases, which is nearly 200 more than health officials dealt at the height of the province's first surge of cases back in April.
BC health officials said on Monday that 269 new coronavirus cases have been confirmed in the province since Friday.
"Laboratories are reporting that allocations for most COVID-19 test manufacturers can not keep up with the demand and are consequently sending specimens to outside labs for testing", the agency said.
The Arizona Department of Health Services (ADHS) announced Monday they have implemented emergency measures requiring schools, child care centers and shelters to report outbreaks of COVID-19 to their local health departments.
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The agency has said that the vaccine produces an immune response after double administration with an interval of 14-21 days. The companies revealed that the side effects of the latest vaccine BNT162b2 are less visible.
As well, 2,594 people are under active public health monitoring as a result of identified exposure to known cases.
The outbreak at Okanagan Correctional Centre remains at seven cases and all are members of the staff.
Linn County hospitalizations are at 25 as of Sunday. A total of 159 cases have been released from isolation.
Out of the 178 Whitley County cases, 22 patients were under the age of 18, 10 patients were ages 18-20, 35 patients were ages 21-30, 37 patients were ages 31-40, 23 patients were ages 41-50, 19 patients were ages 51-60, 14 patients were ages 61-70, 14 patients were age 71-80, and four patients were over age 80.
In the past week, while national daily-reported cases fell 15.8 percent and national daily-reported deaths fell 8.4 percent, new-daily-reported cases in Iowa rose 9.7 percent and new daily-reported deaths rose 28.6 percent.