Pfizer vaccine may not protect against the South African strain. Couldn’t get the link to post, but here’s a quote:

Researchers tested the engineered virus against blood takenfrom people who had been given the vaccine, and found a two-thirds reduction in the level of neutralizing antibodiescompared with its effect on the most common version of the virusprevalent in U.S. trials.

Sure would be great timing to meet this with a positive update on the Complete Vaccine tomorrow!