ROCKFORD, Ill. (WTVO) — The omicron variant of COVID-19 is now the dominant variant of the coronavirus in Winnebago County, the health department said on Wednesday.

During a Monday press conference, Winnebago County Health Department director Dr. Sandra Martell said only 15 cases had been reported at that time, underscoring the high level of transmissibility of the omicron variant.

As of Wednesday, Winnebago County was showing a positivity testing rate of 23.7%. Fifty-five percent of the county is currently fully vaccinated, the WCHD reported.

UW Health SwedishAmerican said Tuesday that all of its ICU beds were in use. The other two Rockford hospitals, Mercyhealth and Saint Anthony, did not respond to inquiries about capacity there.