Across decades of co-circulation in humans, influenza A subtypes H1N1 and H3N2 have caused seasonal epidemics characterized by different age distributions of cases and mortality. H3N2 causes the major
Prevalence of positive Leptospira microscopic agglutination tests by primary reacting serogroup, Espaillat and San Pedro de Macoris Provinces, Dominican Republic, July-Oct 2021.
