COVID-19 cases reported at Northwestern University fell to nine this week from 18 last week.

The cases this week affected three undergraduate students, four other students and two faculty, but no staff members.

With the latest decline in cases the school said that the campus activity level has improved to “green” from the “yellow” level of the past several months, allowing an increase in in-person activities.

The school says that over the seven-day period ending Wednesday it conducted 11,181 tests for the disease, down from 12,281 in the previous period. The positive rate this week was 0.07% compared to 0.17% the week before.

NU says it has conducted a total of 274,139 tests since Aug 20.

The COVID cases reported by the university are included in the City of Evanston’s case counts if, and only if, the person involved lives in Evanston.

To look at the data another way, NU, with about 30,800 students, faculty and staff, had 2.9 cases per 10,000 population in the most recent period, compared to a rate of 5.8 the previous week.

Evanston during the same period had 31 cases among its 75,000 residents, or 4.1 cases per 10,000 population, compared to a rate of 7.6 the previous week.

Bill Smith is the editor and publisher of Evanston Now.

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