World Coronavirus Dispatch: Varied regulatory decisions on Oxford vaccine

Facebook strangers in Hong Kong help ease Covid pain, why the vaccinated still need to wear a mask, WHO plans vaccine nods for global roll-out and other pandemic-related news around the globe

Why vaccinated people still need to wear a mask

Many vaccines that were made in record time racing against the pandemic are now being successfully rolled out across the world. Those from Pfizer and Moderna have shown to trigger robust immune response, while the Astrazeneca shot, made in parternship with Oxford University, is reasonably effective as well. These vaccines have successfully proven effective in trials and now, after the roll-out, that they are safe and help people from getting sick. However, there is little information or proof that these shots will stop the transmission -- that is, people spreading the virus