Moderna has acknowledged that its mRNA vaccine is less effective against the South African variant.

https://www.cnbc.com/2021/01/25/covid-vaccine-moderna-working-on-covid-booster-shots-for-south-african-strain.html

What a nice way to put it across!

If the vaccine is still effective, there is no need to create another new vaccine and call it a covid booster.

The pharmaceutical companies will just make false claims to sell their drugs. 

http://sg-stock.blogspot.com/2021/01/pharmaceutical-companies-will-make.html

Pfizer is also using mRNA technology and it should also be less effective against the South African variant.  Let's see if Pfizer will create a covid booster too.