So far, the data we've seen for both Pfizer and Moderna have shown that their vaccines are quite effective against the 1.1.7 variant, which is the U.K. variant. In laboratory studies, both of those mRNA vaccines have shown some decreased activity against the 501 variant, which is the South Africa variant.
Because it was starting with such a high level of efficacy, it was still at levels that were protected. Both those mRNA vaccines, at this point in time, are deemed to still be protective against the variants we know of so far.