People line up at a walk-up COVID-19 testing site in Miami Beach, Florida on November 17, 2020. - US biotech firm Moderna on November 16, 2020 announced its experimental vaccine against Covid-19 was almost 95 percent effective, marking a second major breakthrough in the quest to end the pandemic. Moderna released early results from a clinical trial with more than 30,000 participants, after American pharmaceutical company Pfizer and its German partner BioNTech last week said their vaccine was 90 percent effective. (Photo by Chandan KHANNA / AFP)