Arizona State University announced on Monday evening that the number of students who were known to have COVID-19 as of Sunday was now 807, down from the 957 reported on Thursday.
The number of employees with COVID-19 also decreased to 18 from 26 three days before.
The university did not explain what caused the decreases and did not immediately respond to The Arizona Republic’s question on the matter.
About 4,700 more COVID-19 tests had been performed in the past three days, bringing the total number of tests performed on the ASU community to 48,152, according to ASU.
Because it was not clear if the number reflected total cases since the semester began or only people currently sick, it was not possible to calculate what percent of tests were coming back positive.
Based on data reported last Thursday, ASU had a positivity rate of about 2.3%. A positivity rate of 5% is considered a good benchmark that the spread is under control.
Of the 807 students sick as of Sunday, about 71% lived off campus in the Valley, according to ASU. Just 202 were in isolation on the Tempe campus, down from 369 last week.
The Polytechnic campus in Mesa had at least one case for the first time since ASU began reporting case information on August 28. The university did not say how many cases were each on the Polytechnic, West or downtown Phoenix campuses due to “concerns that the specific individuals could otherwise be identified from the number.”
ASU did not respond to The Republic’s question on Sunday about if anyone with COVID-19 in the ASU community had been hospitalized.
The university planned to release updated numbers on Monday and Thursday evenings.