Probably nobody. It's Cuban, after all.

It's also a conjugate vaccine, which have been in use almost 100 years now. So it's a pretty well known technology. Apparently the Cubans have also vaccinated close to two million kids with their vaccine since summer, and it seems to be both safe and effective.

And this is according to Nature. I doubt the sciency stuff doesn't matter, when we have "values" to defend.

The Cuban Abdala vaccine has yet to receive WHO approval, a requirement for many countries.  Viet Nam, Venezuela, and Honduras either have or are in the process of purchasing the vaccine.  Practically speaking, Latin American and African countries are desperate to get vaccines and many may go ahead with purchase.

Cuba's bet on home-grown COVID vaccines is paying off: Preprint data show that a three-dose combo of Soberana jabs has 92.4% efficacy in clinical trials

When the COVID-19 pandemic began, Cuba decided not to wait on the rest of the world to develop vaccines. The United States' 60-year-old economic embargo against the country, which prevents US-made products from being exported there, would make it difficult for Cuba to acquire vaccines and therapies, researchers and officials knew. "It was best, for protecting our population, to be independent," says Vicente Vérez Bencomo, director-general of the Finlay Institute of Vaccines in Havana.

So the Finlay Institute and Cuba's other state-run biotechnology centres started developing their own COVID-19 vaccines in the hope that at least one of them would be effective. Their bet seems to be paying off: in a 6 November preprint published on medRxiv1, Vérez Bencomo and his colleagues report that one of the institute's vaccines, Soberana 02, is more than 90% effective in protecting against symptomatic COVID-19 infection when used in combination with a related vaccine. Importantly, the combination seems to be effective against the highly transmissible Delta variant of the coronavirus SARS-CoV-2, which has caused surges in hospitalizations and death across the world and now accounts for nearly all COVID-19 cases in Cuba

As an aside, WHO is forecasting a shortage of syringes so it's completely pointless to stockpile vaccines that will only sit there and rot. Which would be par for the course since historically ~50% of vaccines sent to the Third World pass their 'Use By' date due to logistic barriers.

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre