It has been more than two years that the world has been faced with the corona virus. each country has sought and created the best vaccine in the form of medicine.
Is the world now safe against the corona virus, what do you think?
Coronavirus is not a threat to the world, it's a threat to the human race (which is just one out of about 17 million living species).
No country sought or created "the best vaccine". Some countries developed the vaccines more suitable to cope with the emergency, the best way they could. It's important to understand these are
emergency vaccines, therefore not "the best" by a long shot.
And finally, the world is not, has never been, nor will ever be safe. It's just the one we live in.