“We have the medical records. We can understand where our patients are. We're not trying to negotiate with loads of different insurance companies. … It's the same standard right through the country,” she added. “Whereas in the States, it's going to be harder to really think about how do you reach underserved communities, how do you get out there and provide the same access to everybody to this vaccine?” David Salisbury, a former director of the government's immunization program and a fellow at London's Chatham House think tank, added that Britain also has the edge because of its track record in successfully rolling out other vaccines, such as the seasonal flu shot.