Although more than eight in 10 adults know that avoiding mosquito bites is the best way to avoid West Nile virus and dengue fever, far fewer know how to select and correctly apply insect repellent, a new national survey shows.
Nearly two-thirds say they try to prevent mosquito bites through methods such as wearing bug spray or long-sleeved shirts when outdoors, removing standing water from around the home, and maintaining window screens, according to an Annenberg Science and Public Health survey published yesterday.
But respondents were uncertain about how to use sunscreen and insect repellent together.
Only one-third of respondents knew that the Centers for Disease Control and Prevention (CDC) recommends applying sunscreen first, letting it dry, then applying bug spray, according to the survey of 1,904 adults, conducted August 4 to August 17. Only 18% know to choose insect repellent registered with the Environmental Protection Agency (EPA). And just 15% know not to apply mosquito repellent to skin under clothing.
The survey found 53% know that insect repellent should not be used on babies younger than 2 months old.
Only 16% of adults worry that they or someone in their family will contract West Nile or dengue in the next three months.
EPA-registered insect repellents recommended
The CDC has reported 504 human infections with West Nile Virus as of September 8. There also have been 1,404 cases of dengue fever in people infected locally, rather than through travel.
The CDC recommends EPA-registered insect repellents with active ingredients such as DEET, picaridin, IR3535, oil of lemon eucalyptus, para-menthane-diol, or 2-undecanone. The CDC notes that concentrations above 50% DEET do not provide additional protection against mosquito bites.
The margin of sampling error for the survey is plus or minus 3.2 percentage points at the 95% confidence level.