“…17,76,124 ETHNIC AND SOCIOECONOMIC FACTORS Regional and racial differences in the incidence of IPD have been noted globally. 24,74,76,135 Pneumococcal infections are more common in indigenous peoples of Alaska [136][137][138] and the Canadian arctic, 138 Inuits in Greenland, 139 American Indians (White Mountain Apache and Navaho), 82,[140][141][142] blacks in the United States, 17,74,76,135 Australian aborigines, 143 Maoris of New Zealand, 144 and Bedouins of Israel. 145 Socioeconomic factors likely are responsible for the higher incidence in these groups, but genetics may play a contributory role.…”