influenza and rsv. health officials say it is too soon to say if numbers are rising or just returning to pre-pandemic levels. strep is not fatal for most and can be treated with antibiotics. despite china s relax of covid standards, shanghai schools are taking precautions. according to a statement from the shanghai education bureau, in-person classes at all kindergarten and most grade schools will shuts down starting on december 19. the bureau is also asking most grades in primary, middle and high schools in shanghai to hold online classes instead. and most ninth and 12th graders can apply to study from home. nina huang has more.