CNN CNN Newsroom With Fredricka Whitfield November 27, 2021 16:02:00
To scientist exactly what is going on, a bit more widespread in south africa than originally thought. >> researchers say there's reason to be worried. it has more than 30 mutations in the spike protein, the part of the virus that gains entry to human cells to cause infection. the covid-19 infections target the spike protein. if the spike changes too much or in the wrong way, it could make the vaccines less effective. learning exactly where mutations are and how they change the spike protein will be key. >> first of all, you want to find out if it evades the vaccines we're to go. we're trying t...