We know that if you get infected with Covid, the natural immunity can last
upto 8 months. Vaccine immunity is generally stronger and can last for a longer term. The explanation was given by Prof Shiv Pillai (Harvard) and I had done a previous post on it. But as variants surface we might need boosters along the way unless the
universal covid vaccine comes into use.
The Chinese crap vaccine is the most expensive in the world...($60.00 for two doses) and imagine the commission over five years.

To be fair, also anyone investing on a venture like this will have a minimum period of commitment. Who else will buy the Chinese vaccine anyway? Any ideas?
PS: I forgot to mention that the MRI has the capability to make inactivated vaccines.