https://www.cdc.gov/parasites/lice/head/epi.html Centers for Disease Control and Prevention estimates Every year https://www.cdc.gov/parasites/lice/head/epi.html 6 to 12 million Parasites: Epidemiology & risk factors 6-12 million U.S. kids Centers for Disease Control and Prevention research http://www.cdc.gov/parasites/lice/head/epi.html http://www.cdc.gov/parasites/lice/head/epi.html 6 and 12 million CDC estimates https://www.cdc.gov/parasites/lice/head/epi.html Centers for Disease Control and Prevention (CDC) Centers for Disease Control and Prevention, http://www.cdc.gov/parasites/lice/head/epi.html. https://www.cdc.gov/parasites/lice/head/epi.html 6-12 million infestations occur each year Centers for Disease Control and Prevention According to the CDC CDC More than 6 million children according to the Centers for Disease Control and Prevention CDC Lice head louse lifecycle https://www.cdc.gov/parasites/lice/head/epi.html most common http://www.cdc.gov/parasites/lice/head/epi.html https://www.cdc.gov/parasites/lice/head/epi.html Source: CDC 6 million new cases of lice infestations CDC head louse life cycle 12 million people Centers for Disease Control and Prevention, CDC according to the Centers for Disease Control and Prevention Centers for Disease Control and Prevention aged 3 to 11 African-Americans are less likely to get lice Centers for Disease Control and Prevention Centers for Disease Control and Prevention 6 to 12 million kids https://www.cdc.gov/parasites/lice/head/epi.html 6 to 12 million infestations 6 to 12 million cases are reported among U.S. children https://www.cdc.gov/parasites/lice/head/epi.html Centers for Disease Control and Prevention Centers for Disease Control and Prevention estimates Lice can cause bacterial infections nothing to do with the cleanliness of a host