chris colwell. you have seen an uptick in cases among vaccinated people at zuckerberg. how big of an uptick? >> the uptick in vaccinated patients is still not a big uptick. in that group. we are seeing a significant rise in overall covid-19 cases and 10 days ago we were down to one patient in the hospital and we have been as high as nine and two in the icu. numbers are more than tripled although still very few of them are in the vaccinated cases. several have needed to be admitted to the hospital. there are cases where our breakthrough cases, getting through the vaccinations, the large majority have not been sick. thankfully even the few that have been hospitalized have been discharged and to have done well. >> vaccinated people do seem to be asymptomatic if they catch covid-19? >> it is not asymptomatic but they are not getting sick enough to need -- to be admitted to the hospital or certainly not sick enough to go to the icu. >> to those breakthrough cases fall into a certain age category? are they older or have a certain gender? >> they do come from all all groups bu

chris colwell is chief of emergency medicine at san francisco general hospital where their covid patientsbled overnight to nine, all of them unvaccinated. he says that needs to change. >> one of the questions that has to be asked is to what extent are we free to make choices that have this serious of an impact on other people? and it is taking ultimately the lives of other people and putting them at risk to make a choice that from on my perspective just doesn't make any sense. >> reporter: acting san francisco health officer dr. susan phillip says they are watching data closely and would like to avoid shutting down the city again. >> if you have friends or family that have been hesitant, now is the time. please don't hesitate any longer. get the vaccine. it will save your life and it will be what's best for our city. >>> california is keeping its mask mandate for schools despite the cdc's new guidelines. today the cdc said students, teachers and staff who are fully vaccinated will not need to wear masks in school beginning this fall, but california health officials say they are recommendi

chris colwell is chief of emergency medicine at san francisco general hospital where their covid patients nine, all of them unvaccinated. he says that needs to change. >> one of the questions that has to be asked is to what extent are we free to make choices that have this serious of an impact on other people? and it is taking ultimately the lives of other people and putting them at risk to make a choice that from on my perspective just doesn't nse. >> reporter: acting san francisco health officer dr. susan phillip says they are watching data closely and would like to avoid shutting down the city again. >> if you have friends or family that have been hesitant, now is the time. please don't hesitate any longer. get the vaccine. it will save your life and it will be what's best for our city. >>> california is keeping its mask mandate for schools despite the cdc's new guidelines. today the cdc said students, teachers and staff who are fully vaccinated will not need to wear masks in school beginning this fall, but california health officials say they are recommending all to w masks so that no

chris colwell is the chief emergency ci ctor, wherthere co ernight to nine, all of them unvaccinated. he says that needs to change. >> one of the questions that has to be asked is, to what extent are we free to make choices that have the serious of an impact on other people? and it is taking ultimately the lives of other people and putting them at risk to make a choice that, from my perspective, just does not make any sense. >> reporter: acting san francisco health officer dr. susan phillips says they are watching the data closely and would like to avoid shutting down the city again. >> if you have friends or family that have been hesitant, now is the time. please don't hesitate any longer. get the vaccine that will save your life. it will be what is best for our city. an kate larson, abc7 news. >>> california is keeping its mask mandate for schools, despite the cdc new guidelines. the cdc says teachers and staff were fully vaccinated will not need to wear a mask in school this fall. the california school districts say they are recommending all students wear a mask so no child feels s