Several countries plan to administer booster shots to increase vaccination while the World Health Organisation is calling for a moratorium. Senior Consultant and Professor in Infectious Diseases at National University Hospital Singapore, Dr Dale Fisher discusses how policymakers could evaluate their needs.

Image credit: Shutterstock.com

Produced by: Philip See

Presented by: Shazana Mokhtar, Noelle Lim, Khoo Hsu Chuang

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