Rollout of COVID-19 vaccines has begun. But getting the jab doesn't mean abandoning masks, distancing and handwashing. Here's why the current preventive measures must continue post-vaccine.
With reports emerging of vaccine wastage across the world, medical supply chain experts explain why that's to be expected.
With vaccine shortages looming, experts are debating whether it is important to receive two doses or whether it's better to give one dose to more people and give a second when the supply is better.