VANCOUVER -- Another 10 elementary and secondary schools in the Lower Mainland have had exposures to COVID-19 variants of concern, according to health officials. Fraser Health said it's working closely with school districts in Surrey, Burnaby and Coquitlam to manage the latest exposures, and that seven full classes are in isolation as a result. That includes two classes each at North Surrey Secondary and Woodward Hills Elementary, and one class each at Frost Road Elementary, Marlborough Elementary and Princess Margaret Secondary. "As these are variants that are new to our communities and more easily transmissible, Fraser Health is working to identify any further connected variant cases to ensure immediate isolation and case management to prevent further transmission," the health authority said in a news release.