We were all thrilled by the recent good news that both Pfizer and Moderna managed to produce vaccines against Covid-19, which are over 90% effective. But this doesn’t mean hardships are over. Far from it. Both of these vaccines were created using a novel method, and need to be stored in extreme cold, which makes for logistical challenges. But what sets these vaccines apart, and why do they require such brutal cold? Find out in this video.
