protection of our vaccines over time. >> cnn is covering these global developments all over the world. we have reporters in london, arlette zientz with the president in nantucket. nada, the prime minister said there's a lot we don't know. what did we learn? >> reporter: there is a concern now that this new variant may be more transmissible and may have a negative impact on the vaccines. most of european allied population is double vaccinated. there are concerns this new variant will have a negative impact and the vaccines may not be enough and they may not have the effect on previous variants. there are investigations and studies ongoing. we heard from many fpharmacy