http://www.cdc.gov/oralhealth/infectioncontrol/faq/hand.htm "Hand Hygiene FAQ" "Hand Hygiene FAQ" CDC Hand Hygiene frequently asked questions by the CDC CDC Hand hygiene frequently asked questions http://www.cdc.gov/oralhealth/infectioncontrol/faq/hand.htm CDC Hand hygiene frequently asked questions CDC Hand Hygiene frequently asked questions http://www.cdc.gov/oralhealth/infectioncontrol/faq/hand.htm