我不真的明白。“它的爆发人群在非土著人中是和同性发生关系的男的” For the outbreak group, among non-indigenous people, 。。。 was correlated with male homosexuality? I'm not sure I understand the Chinese. 和同性 is "and homosexual"? and 发生 is the appearance, the outbreak? and its among men? I don't understand the relationship between the two clauses... maybe you mean "Between 2006 and 2009, the prevalence of syphilis was greater among non-indigenous people and greater among homosexual men."? Or maybe, slightly different meaning "was greater among non-indigenous people and among those, greater among homosexual men." This wouldn't include "indigenous homosexual men" in the comparison. Remember to use "prevalence of syphilis" or "prevalence of the disease" or something. Not "of people".