[Some epidemiological aspects of myasthenia gravis in Cuba]

We estimated the rates of prevalence, incidence, mortality and lethality for myasthenia gravis in Cuba based upon previous epidemiological studies carried out in eight of Cuba's fourteen provinces: Pinar del Río, Havana City, Havana, Matanzas, Cienfuegos, Sancti Spíritus, Camagüey and Guantánamo. Rates of incidence, prevalence and mortality were 4.52, 29.22 and 0.72 per million inhabitants respectively. Lethality rate was 10.77%.