Source: United States & Canada – South China Morning PostThe Centres for Disease Control and Prevention changed course on Tuesday on some masking guidelines, recommending that even vaccinated people return to wearing masks indoors in parts of the US where the delta variant of the coronavirus is fuelling infection surges.Citing new information about the variant’s ability to spread among vaccinated people, the CDC also recommended indoor masks for all teachers, staff, pupils and visitors at schools nationwide, regardless of vaccination status.In other…Read More