South Korea has approved the use of Pfizer’s coronavirus vaccine for children aged 5 to 11, the Food and Drug Safety Ministry announced on Wednesday, following an increase in the country’s COVID-19 infections. The ministry stated that children with underlying health problems would be given priority to receive the Pfizer vaccine, with a vaccine rollout plan to be announced in March, local outlet Yonhap News Agency reported. Health authorities evaluated the safety of Pfizer’s vaccine in 3,109 children aged 5 to 11, and found that side effects occurred more commonly after the first dose. They noted that the side effects were mild and would typically subside within three days. The vaccine was 90.7 percent effective at preventing children from contracting the virus, with no severe side effects reported so far, the ministry stated. Children aged 5 to 11 will receive one-third of the amount a 12-year-old would get, with two …