this issue of availability of vaccines was something that some rich countries did to monopolize vaccines, there are countries that are giving vaccines to tourists when in other countries there are no vaccines for people in risk zones, something very unfair because these third world countries like My country also paid for the vaccine but the rich collected all the vaccines, the result is that third world countries will suffer in the economy because they have to continue to take the most severe measures of restrictions
During the initial stages, the richer countries hoarded almost all the vaccine output from Pfizer and Moderna. The poorer nations had to depend on less efficient vaccines such as Sinopharm and Sinovac. And when Pfizer started distributing the vaccines to poorer nations, they demanded very one-sided indemnity agreements from the governments of these countries. In case of Argentina, they even wanted to put the military bases and gold reserves as collateral. And despite all this, now it turns out that the efficacy of the Pfizer vaccine lasts for only 4-5 months.