covid-19March 22, 2021 Cuba to vaccinate 150,000 frontline workers as part of final phase of clinical trial Cuba announced it would vaccinate 150,000 frontline workers as part of the final phase of a clinical trial for the Soberana 2 vaccine. Related posts U.K.'s Johnson launches mass testing…Do you need a Covid-19…What's behind workers' hesitation to…Fully vaccinated people can travel…Younger Latino men are Covid's…Salmonella infections in eight states…Salmonella infections in eight states…The U.S. isn't losing to…Virus-killing robot tested for use…In Covid fight, Cuba touts…