Coronavirus: what if vaccines aren’t enough for herd immunity?

With vaccination programmes being rolled out by countries around the world, it seem the tables have finally turned in the fight against the novel coronavirus.The grim milestones of 100 million infections and 2 million deaths may have been passed, but along with the vaccines comes the hope of herd immunity, a future world in which Covid-19 has been slowly throttled out of existence as it runs out of hosts to infect.Or at least that’s one rosy scenario. Unfortunately, experts are warning it may…

Read the original article at South China Morning Post