Updated on July 23, 2021 at 3:27 pm NBC Universal, Inc. The delta variant is not only raising concerns for the unvaccinated, but also for people who got the Johnson & Johnson vaccine. That's because some doctors have no questioned its effectiveness against the variant, with some even suggesting people go get a different shot. Our redesigned local news and weather app is live! Download it foriOS or Android — and sign up for alerts. The Santa Clara County Public Health Department is taking a closer look at the issue, but said it will continue to give the Johnson & Johnson shot and trusts its efficacy. Some people agree, but others said they are not so sure.