The occurrence of meningococcic disease in Japanese and their descendants, in the municipality of Londrina, Parana, Brazil (1965-1975)

In the case of Japanese and their descendants living in the municipality of Londrina, State of Parana, the morbidity of meningococcic disease was about seven times lower than for the rest of the population, the death rate having been nil during both endemic and epidemic phases. A review of medical and hospital records, covering registered cases, showed no diagnoses of meningococcic disease in 75% of patients of Japanese origin or in 20% of samplings of non-Japanese patients.