Moderna says upcoming clinical trials for its COVID-19 vaccine will include Canadian children. The company announced details of its Phase 2/3 study of COVID-19 earlier this week. It’s expected to involve 6,750 healthy pediatric participants aged six months to 12 years. Moderna says initial participants are based in the United States but that Canadian sites will be added as the trial progresses. US to Ramp up Screening in Schools as Part of $12 Billion Testing Effort The U.S. government is investing $12.25 billion on ramping up COVID-19 testing in the country to help schools reopen safely and promote testing equity among high-risk and underserved populations. The U.S. Department of Health and Human Services (HHS) said on Wednesday it will provide $10 billion to states to support COVID-19 screening and testing for teachers, staff, and students to assist schools to resume in-person instruction. The remaining $2.25 billion HHS investment will be used to …