Coronavirus vaccine success to hinge on global immunisation programme

Tens of thousands of volunteers around the world are being injected with experimental Covid-19 vaccines as developers race to find effective prevention. A successful vaccine could be the escape hatch from a pandemic that in the space of half a year has cost hundreds of thousands of lives and trillions of dollars.But the real test may depend on how many people have access to a vaccine. A majority of the world’s 7.8 billion people would likely need to be inoculated to reach the critical mass or …

Read the original article at South China Morning Post