On the Guardian today – Covid-19 vaccine is cheaper, easier to make and patent-free
Caveat – little about efficacy:
“Corbevax’s clinical trial data has yet to be released due to resource constraints, but Texas Children’s hospital said the vaccine was over 90% effective against the original Covid-19 strain and over 80% effective against the Delta variant. The vaccine’s efficacy against the Omicron variant is currently being tested.”
