Five genetic variants and six mutations of SARS-CoV-2 in Cuba Five genetic variants and six mutations of SARS-CoV-2 in Cuba Havana, Apr 7 (Prensa Latina) Five genetic variants and six mutational patterns of SARS-CoV-2, the pathogen that causes Covid-19, are currently circulating in Cuba, health authorities informed. Maria Guadalupe Guzman, director of research at the Pedro Kouri Tropical Medicine Institute (IPK), stated that a population study conducted between December 28, 2020, and March 28, 2021, identified the presence of different variants of the virus other than group G, which was initially reported and is still predominant. 'Four changes and five mutational patterns have been detected in imported cases, while for autochthonous contagions, we verified a decrease in time of the D614G variant and a gradual increase in the one reported in South Africa and California, in the United States,' the expert said.