Serbia starts booster 3rd COVID shots rollout

Serbia began administering a third, or booster, dose of vaccines this week to people who previously were vaccinated at least 6 months ago, after cases of infections have surged in recent days. Authorities said that citizens will receive text messages with invitations for booster shots.

Initially, heath authorities will contact people with weakened immune systems, the elderly, medical workers and those whose jobs require frequent travel. Serbia, a Balkan nation of around 7 million people, has vaccinated over 50% of its population. Most people have received China's Sinopharm vaccines, Pfizer-BioNTech, Russia's Sputnik V or AstraZeneca.