we go to ■ontra osta county were hospitalizations have jumped.n fact, the county health officer says people not fully vaccinated are 20 times more likely to get covid than those who are fully vaccinated. >> reporter: this doctor has seen his share of heartbreak and loss. after weeks of low patient counts, he finds what's happening concerning. >> the vast majority of people are unvaccinated. that has been the driving force of our new patients at the hospital. >> reporter: he has 24 patients nearly half of all the hospitalized covid patients and contra costa county? >> our patients have gone to over 50 hospitalized patients with covid in the last now and. >> reporter: the makeup of hospitalized patients has evolved for mostly older people often with underlying conditions to those much younger . >> people going to the hospital are almost exclusively unvaccinated people. we are seeing younger people in their 30s, 40s, and 50s really sick and in the hospital. >> reporter: there are similar upticks in the number of hospitalized covid patients. the vast