US gave 6 companies funding to manufacture polio vaccine in 1960s, 1 of them made it badly, Cutter laboratories they didn& #39;t properly kill the polio virus.
Result - out of 1.2 Lakh kids inoculated with live virus, 40k developed abortive polio, 200 paralysis, 10 were killed. https://twitter.com/scribe_prashant/status/1392010203650957314">https://twitter.com/scribe_pr...

It& #39;s takes years of expertise to manufacture a vaccine, which is safe and doesn& #39;t kill people. Asking people to make them at home, is like asking everybody make brahmos missile in their backyard, because didn& #39;t have money fund military.

Also unlike top secret brahmos missile, vaccine manufacturing formula are already public, when patents are filled.
So what& #39;s stopping the other from copying that. Well 1stly the patent itself, 2nd unlike generic tablets here u are dealing with live organisms,

have to prove that u can manufacture it safely and that takes time for clinical trials, else disasters like Cutter laboratories will everywhere and everytime.