Cuba encouraged by early efficacy results of homegrown Covid-19 vaccine

Cuba's Soberana 2 vaccine candidate has shown 62% efficacy with just two of its three doses, state-run biopharmaceutical corporation BioCubaFarma said on Saturday, citing preliminary data from late phase trials. Cuba, whose biotech sector has exported vaccines for decades, has five vaccine candidates in clinical trials, of which two - Soberana 2 and Abdala - are in late phase