From the article:
"Public-health and vaccine experts say developing countries need more supplies to vaccinate residents to contain the spread of the virus and protect against dangerous new variants that emerge.
Developed countries won’t be able to fully reopen, the specialists added, unless developing nations are able to immunize a sufficient number of residents.
With developed countries securing more doses for the next few years, low- and middle-income countries will probably find themselves dependent on rich countries to share or reallocate doses, said Prashant Yadav, a senior fellow at the Center for Global Development who studies supply chains.
He said that, if the divergence persists, more countries will likely sign supply deals with China and Russia, which have been eagerly providing doses made by their manufacturers."