Singapore 🇸🇬 How long does Pfizer’s and Moderna’s efficacy last? February 25, 2021 0 Comments 252842 Answers to your coronavirus questions from Dr. Jen Ashton Source Link Share Article: Tags: AshtoncoronavirusCOVID-19doesDRHealthhowJenlongModernap_cmsid=2494279p_vid=news-76112371pandemicpfizervirus