January 15, 2021 15:50 Updated Follow The registration system will prompt participants to schedule their second dose as soon as they have received the first dose. Related articles What about the second dose? Should I sign up for my second shot at the first visit? Who should NOT get the Pfizer COVID-19 vaccine (shot)? I’m not a healthcare worker, but I have an underlying health condition. When can I get a shot? What if I need to reschedule my appointment?