标题：Pfizer vaccine only slightly less effective against key South African mutations - study
从标题看，是个好消息: vaccine will still work against these new variants.
"Pfizer Inc and BioNTech's COVID-19 vaccine appeared to lose only a small bit of effectiveness against an engineered virus with three key mutations from the new coronavirus variant found in South Africa，according to a laboratory study conducted by the U.S. drugmaker.
The study by Pfizer and scientists from the University of Texas Medical Branch (UTMB), which has not yet been peer-reviewed, showed a less than two-fold reduction in antibody titer levels, indicating the vaccine would likely be effective in neutralizing a virus with the so-called E484K and N501Y mutations found in the South African variant.
The study here was conducted on blood taken from people who had received the vaccine. "
可扣细节，看到大坑了："an engineered virus with three key mutations from the new coronavirus variant found in South Africa"
"The scientists are currently engineering a virus with the full set of mutations and expect to have results from that in around two weeks, according to Pei-Yong Shi, an author of the study and a professor at UTMB."
"The study also showed even better results against several key mutations from the highly transmissible UK variant of the virus. Shi said they were also working on an engineered virus with the full set of mutations from that variant as well."
一念天堂 一念地狱 (the difference between heaven and hell lies in your way of thinking)