CORVALLIS, Ore. – Oregon State University’s fifth round of door-to-door sampling throughout the Corvallis community by TRACE-COVID-19 field workers on September 26 and 27 suggests that three people per 1,000 in the community carries the coronavirus on those days.
“It is encouraging that the prevalence of the virus in Corvallis remains relatively low,” said an assistant professor in the OSU College of Science. “The prevalence estimate is slightly higher than it was during sampling in April, May and June but from a statistical standpoint is not different from those earlier dates.”
The professor said the estimate is based upon the number of people who tested positive among those tested over the weekend including the sensitivity of the test and other sampling factors including the number of people tested. The locations of those who tested positive were also noted. He said the upper boundary of prevalence of Corvallis may be nine out of 1,000 people, taking into account uncertainty from the weekend sample and testing.