Global rollout of vaccines is no longer a guarantee of victory over Covid-19 | Coronavirus | The Guardian
At the end of 2020, there was a strong hope that high levels of vaccination would see humanity finally gain the upper hand over Sars-CoV-2, the virus that causes Covid-19. In an ideal scenario, the virus would then be contained at very low levels without further societal disruption or significant numbers of deaths.
But since then, new “variants of concern” have emerged and spread worldwide, putting current pandemic control efforts, including vaccination, at risk of being derailed.
Put simply, the game has changed, and a successful global rollout of current vaccines by itself is no longer a guarantee of victory.
No one is truly safe from Covid-19 until everyone is safe. We are in a race against time to get global transmission rates low enough to prevent the emergence and spread of new variants. The danger is that variants will arise that can overcome the immunity conferred by vaccinations or prior infection.