CDC Pushing New Mosquito Repellents:
ATLANTA (AP) - After years of promoting the chemical DEET as the best defense against West Nile-bearing mosquitoes, the government
for the first time is recommending the use of two other insect repellents.
Repellents containing the chemical picaridin
or the oil of lemon eucalyptus
offer "long-lasting protection against mosquito bites," the Centers for Disease Control and Prevention said, adding that repellents with DEET remain on the agency's recommendation list.
"Since West Nile virus is present across the entire country at this point and it's here to stay, we constantly need to be vigilant," said Dr. Lyle Petersen, director of the CDC's division of vector-borne infectious diseases. "It gives consumers a better option to protect themselves."
Both products have been available elsewhere in the world, including Europe
, "for some time," the CDC said. Repellent makers have been eager to introduce them to U.S. markets but it was hard to compete with DEET, the only chemical touted as effective by local, state and federal health
The manufacturer of DEET, SC Johnson, said it introduced a picaridin-based repellent called Autan in Europe
A Web site on picaridin says it also is known as KBR3023, or Bayrepel, a trademark of Bayer AG. The site said it was developed by Bayer, which began research
for a new active ingredient in the 1980s, and has been in use worldwide since 1998.
SC Johnson vice president Kelly Semrau said the company won't begin selling a picaridin-based repellent in the U.S. until it's registered by the Environmental Protection Agency and all 50 states.
Federal officials maintained for years that non-DEET repellents were not likely to offer the same degree of protection from mosquito bites. DEET has been the go-to chemical for health
officials trying to control the spread of the West Nile virus in the United States.
However, recent studies prompted CDC officials to broaden the recommendations. The CDC says picaridin is "often comparable with DEET products of similar concentration" and oil of lemon eucalyptus provides protection time "similar to low-concentration DEET products in two recent studies."
Consumers tend to like picaridin repellents because they are more pleasant to the skin and don't have the odor
that DEET repellents have. And oil
of lemon eucalyptus is a natural ingredient, which appeals to those who don't like the thought of putting chemicals on their skin, said Angela Proctor, a product manager for the Cutter
line of insect repellents by Spectrum Brands.
Nationwide, only about 40 percent of people use insect repellents. In Pacific coast states such as California
- the state with the highest number of cases (771 cases, 23 deaths) last year - only 23 percent use insect repellent, said Emily Zielinski-Gutierrez of the CDC.
"That's a lot of people who are going out there unprotected," she said.
Users complained of DEET's odor
or said it feels unpleasant on the skin. DEET repellents also have reportedly damaged plastics and fake fingernails. Other people have speculated it could cause brain damage, although the Environmental Protection Agency said the chemical won't cause harm if used properly.
"There's a certain segment of the population that no matter how safe you tell them DEET is, ... there's a hesitancy to use DEET," said Richard Falco, a Fordham University medical
entomologist. "You can do so much to tell people what to use but if they're not using it you have to go to something else. I think this will have a positive impact on public health."
DEET was developed by the U.S. Department of Agriculture in 1946 and has been registered with the Environmental Protection Agency as an approved active ingredient since 1957.
Various levels of DEET appear in the popular Off! lines by S.C. Johnson & Son Inc., including Deep Woods and Skintastic. Other brands such as Repel and BugOff! have lately launched products without DEET.
Spectrum Brands introduced a picaridin-based repellent in January - Cutter
Advanced - and it has been marketing
a repellent with oil of lemon eucalyptus since 2002. The products provide four and six hours of protection, respectively, Proctor said.
The CDC said it still will promote other personal protection measures, such as wearing long-sleeved clothing
while outside and disposing of containers of water
that could be breeding grounds for the flying insects.
West Nile virus first arrived in 1999 in New York
. Last year there were 2,470 cases and 88 deaths. The highest number of U.S. cases came in 2003, when 9,682 people were infected and 264 died.
From the CDC:
- "What You Need to Know about Mosquito Repellent":
- "Updated Information regarding Insect Repellents":