This story was last updated at 4:00pm Thursday, January 21, 2021. The coronavirus pandemic continues to grow with second and third waves reported in many countries. Vaccines are, however, also being rolled out in many places. Rich countries have already secured supplies while poorer countries await their turn. Authorities in Pakistan say we will begin vaccinations in the second quarter of 2021. It is not yet known which vaccine out of the eight approved for emergency or full use will be administered in Pakistan. Here are the major vaccine frontrunners in the world with their efficacy and the countries they have been rolled out in: Pfizer vaccine: Infographic: Obair Khan/ SAMAA Digita.