With vaccine tours, let the buyer beware

While new Covid-19 clusters have been springing up like mushrooms, health authorities are working against time to convince people to register for the vaccine, aiming to build herd immunity. So far, more than 7.5 million people aged 60 and above and those with seven types of underlying health conditions are in a queue to receive 16 million doses of the AstraZeneca and Sinovac vaccines as part of...