The Ministry of Health’s official guidance on its Covid-19 website has listed a few groups it deemed are not suitable to receive Pfizer-BioNTech’s vaccine. This includes: women who are pregnant or planning to get pregnant; cancer patients who are undergoing treatment like chemotherapy, radiotherapy, and immunotherapy, Persons Living with HIV with CD4 counts of less than 200. Melisa Idris and Sharaad Kuttan speak to Prof Dr Woo Yin Ling, Consultant Gynaecological Oncologist at Universiti Malaya Medical Centre.