“With regard to booster vaccinations, the conclusions regarding their benefits are not yet final.
We also do not know if they are safe, "TASS quotes him.
In his opinion, additional vaccinations against coronavirus are "morally wrong" in the face of vaccine shortages in poor countries.
“When some countries can afford booster vaccinations, while others have not yet completed the first and second rounds of vaccination, this is a moral problem,” Ghebreyesus said.
Earlier, Chilean President Sebastian Piñera announced the start of the use of additional doses of the coronavirus vaccine for citizens over 55 years old.