An Investigation of Pediatric Case-patients With Invasive Haemophilus influenzae in Alaska, 2005-2011.

Background: Haemophilus influenzae (Hi) can cause severe disease in children. This study aimed to identify risk factors related to invasive Hi disease in Alaska children and evaluate carriage in people around them.

Methods: From 2005 to 2011, we investigated episodes of invasive, typeable Hi disease in Alaska children <10 years old.

Outbreak of invasive Haemophilus influenzae serotype a disease.

Haemophilus influenzae serotype a is a rare cause of invasive disease. We report 5 cases of invasive H. influenzae type a that occurred in 3 infants living in a remote region of Alaska during the last 6 months of 2003.