Low concentrations of omicron variant found in Sacramento County sewage sample KCRA SacramentoHouston Health Department crews testing wastewater at dozens of schools KHOU 11Evidence of COVID-19 omicron variant found in Merced, scientists say KFSN-TVCOVID-19 omicron variant detected in Houston wastewater KHOU.comOmicron COVID variant detected in Sacramento County wastewater last month, officials say Sacramento BeeView Full Coverage on Google News