This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.
In Charlottesville, Virginia, fraternal twins Evan and Lizzy are enrolled in Pfizer's vaccine trial for children between ages five and 11.
The BBC follows them as they go to their second appointment where they receive a placebo or the vaccine.
Their father, John, explains that though the family is very comfortable with the safety of the vaccine, consent from the children was the priority.