Between 2001-2003 and 2004-2006, these infection rates remained stable in non-native Alaskan children younger than 2, but jumped 82 percent among Alaska Native children, who are more prone to the infections.

• 2003年和2004-2006年期间，在2岁以下的阿拉斯加非本地儿童中，这些疾病的发病率保持稳定，但是在本地儿童中发病率上升至82%25，他们更加易感。