The WHO announced Plifzer-BioNtech coronavirus vaccine has cleared the emergency use authorisation. The vaccine has already received clearance in the United States, Britain, the European Union, Bahrain and many other countries. Weak economies will rely on WHO to vet the vaccination shots. The BioNTech-Pfizer vaccine has to be stored at ultra-frozen temperatures and hence it’s difficult for developing countries where the required freezers and electricity may not be available.