Complex sentence: When the H1N1 pandemic influenza virus was first identified in April 2009, Redd was named Incident Commander where he led CDC's H1N1 response, including case surveillance, public communication and education, developing and disseminating clinical guidance, and vaccination efforts.
Split into simpler sentences: When the H1N1 pandemic influenza virus was first identified in April 2009, Redd was named incident commander of CDC's response. As incident commander, he managed all of CDC's H1N1 response activities, which included: case surveillance, public communication and education, clinical guidance, and vaccination efforts.