likely the pfizer vaccine for children ages 5 to 11 could come as soon as halloween. >> we've had 225,000 kids with covid. it's a serious issue among children and the best way to protect them is with this vaccine. >> reporter: many hospitals seeing an increased number of children infected with covid-19. doctors had to put up a tent outside an emergency room of a children's hospital in pittsburgh to help meet demand of patients. the hospital's chief of emergency medicine writing on social media, the number of children coming to the emergency department at upmc childrens is historic. in all, icus are still over 90% full in at least six states. >> currently across this state we've activated crisis standards of care . this means the ability to deliver community standards of care using conventional means has been exhausted.