Clinical features of Covid-19 patients analyzed in Cuba Clinical features of Covid-19 patients analyzed in Cuba Havana, Apr 6 (Prensa Latina) Covid-19 symptoms and fever as a frequent clinical expression were some of the most relevant features found in Cuban patients with this disease, a study conducted in Havana states on Tuesday. According to the analysis, published in the Cuban Journal of Biomedical Research, about the clinical-epidemiological peculiarities of those who were infected with this disease in Havana, people with blood group O and a history of asthma showed less danger of presenting symptoms. The research confirmed age as the main risk factor in Havana that has the highest incidence rate in Cuba with respect to SARS-CoV-2, the pathogen that causes Covid-19, and a daily average of 561 cases.