Submitted by mike kraft on Wed, 2021-12-01 13:30 US tracking of virus variants has improved after slow start | AP News After a slow start, the United States has improved its surveillance system for tracking new coronavirus variants such as omicron, boosting its capacity by tens of thousands of samples per week since early this year. AP NEWS Country / Region Tags: United States General Topic Tags: COVID-19ContagionDiseaseGovernmentHealthMedical TestingMutationsPandemicsPublic HealthProblem, Solution, SitRep, or ?: Situation ReportGroups this Group Post belongs to: - Private group - Log in or register to post comments