New COVID variants inevitable, Ugur Sahin warns, but the world is 'learning more' and getting a 'better understanding on how to deal with the virus'

Experts doubt current vaccines will become useless in face of new variant, but virus is currently moving faster than science

Ugur Sahin, co-founder of company that jointly developed leading COVID-19 inoculation, says shots have proved effective against other similar mutations

As the German biotechnology firm worked on a shot to defeat virus, other companies around the country already began organizing the infrastructure needed to deliver it to billions

Head of German pharmaceutical company says it will take another two weeks to get enough data to know for sure if inoculation effective against more contagious mutated strain