February 17, 2021 19:33 Updated Follow Experts do not know what percentage of people will need to get vaccinated to achieve herd immunity to COVID-19. Related articles Since this vaccine was developed so quickly, how do I know there won’t be long-term side effects? Who should NOT get the Moderna COVID-19 vaccine (shot)? What COVID-19 vaccine is the safest and most effective? I already tested positive for COVID-19. Do I still need to get vaccinated? I got vaccinated, but my family members did not. Do I need to take any precautions (be careful) in my household?