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Even in Winter

2012 December 6

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By Lina Younes

Recently, my youngest daughter went to Great Falls Park, VA with her fifth grade science class. Since the weather forecast called for a cold day, the teacher recommended that the children bundle up in several layers of clothing to fully enjoy their time outdoors. As part of the field trip preparations, the teacher also warned the children about the possibility of ticks in the park. She suggested using insect repellents safely.

Personally, I was puzzled. I didn’t think that ticks and other insects could survive cold temperatures. I always associated bugs like ticks and mosquitoes with the summer months. Outdoor bugs and winter didn’t make sense to me. I asked the experts in our Office of Pesticide Programs for the facts and was even more surprised with the results. Thus, I decided to share the information with you.

How cold does it have to be in order not to risk get bitten by mosquitoes and ticks when you go outside? The answer: Below 4 degrees Celsius (about 39 degrees Fahrenheit) for mosquitoes.

And, how about ticks? “For ticks—they can bite year round. It is less likely below freezing temperatures due to lack of movement, but they can attach if you come in contact with them.”

In my case, I confess, that I will be more vigilant when I hear about outbreaks of tick and mosquito-borne diseases such as lyme disease, West Nile Virus,  and Rocky Mountain Spotted Fever, when I go outdoors. And, when traveling to subtropical and tropical areas, such as U.S. territories (Puerto Rico and Guam) we need to be careful with mosquito transmitted diseases, such as dengue fever, too.

Furthermore, do you have pets? Do you take your dog for a walk outside? Make sure your pet doesn’t bring any ticks home with him even during winter. Ask the veterinarian for tick control products that will help prevent ticks from attaching to your pet so everyone can stay healthy.

About the author: Lina Younes has been working for EPA since 2002 and currently serves the Multilingual Outreach and Communications Liaison for EPA. She manages EPA’s social media efforts in Spanish. Prior to joining EPA, she was the Washington bureau chief for two Puerto Rican newspapers and she has worked for several government agencies.

Editor's Note: The opinions expressed here are those of the author. They do not reflect EPA policy, endorsement, or action, and EPA does not verify the accuracy or science of the contents of the blog.

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