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nbsp;On a separate note, the researchers said the vaccine is likely effective against a coronavirus variant first detected in the U. new balance mzantbg2 nbsp;"Things may get worse again as new variants spread and as we face setbacks, like recent winter storms in the Midwest and South. new balance mzantbg2 FILE: Pharmacist Diana Swiga fills a dead volume syringe with the Pfizer-BioNTech COVID-19 vaccine at a pop-up COVID-19 vaccination. new balance mzantbg2 nbsp;Former President Trump will speak at the conference as the headliner on Sunday afternoon, the final day of the conference. new balance mzantbg2