When new cases of COVID-19 appear, South Korea increases its booster injections.

As new cases of COVID-19 start popping up all throughout South Korea, health officials there are deciding to offer booster doses to everybody aged 50 and up. The 40,226 new cases recorded on Wednesday were the biggest daily increase in over two months, despite constant numbers for both hospitalizations and fatalities. South Korea's leading infectious disease expert, Beak Genogram, said the rising case counts were due to people's weaken....