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Tag Archive | "Zika"

Asian tiger mosquitoes identified in Wayne County


An Asian Tiger Mosquito at the beginning of feeding. By James Gathany/CDC

Insect can transmit viruses such as dengue, chikungunya and Zika

LANSING, Mich. – The invasive Asian tiger mosquito, Aedes albopictus, has again been identified in Wayne County, officials from the Michigan Department of Health and Human Services (MDHHS) and the Wayne County Health Department announced today. The Asian tiger mosquito was discovered in Michigan for the first time in 2017, in an industrial area of Livonia in Wayne County. In 2018, the mosquitoes were again found in Wayne County, in an industrial area of Romulus. This time, the mosquito was discovered in an industrial area in Taylor.

Aedes albopictus, along with Aedes aegypti (the yellow fever mosquito), can transmit viruses such as dengue, chikungunya and Zika to people. These mosquitoes are widespread from tropical to temperate regions of the globe, including many parts of the U.S. They do not occur naturally in Michigan, where winters are usually too harsh for them to survive. However, warming climate trends are supporting the spread of these mosquitoes into more northern regions.

“Although we have not had any illnesses associated with these species of mosquitoes in Michigan, it is important to take precautions since other mosquitoes can spread viruses such as West Nile and Eastern Equine Encephalitis to people,” said Dr. Joneigh Khaldun, MDHHS chief medical executive and chief deputy director for health. “We urge Michiganders to take precautions such as using an EPA-registered insect repellent when outdoors.”

The Asian tiger mosquito can live in areas with climates that range from tropical to temperate, and it has been extending its known range in the U.S. They are considered established in many midwestern states including Ohio, Illinois and Indiana. Occasionally, the mosquitoes will travel in commercial products shipped from states where they are currently established. This is likely how the mosquitoes have shown up in Wayne County.

This summer, MDHHS has again partnered with local health departments in Wayne and 23 other counties in Michigan to conduct surveillance for the two mosquito species that can carry Zika and other tropical viruses. These invasive day-biting mosquitoes breed in containers where water collects, such as old tires, gutters and flowerpots. Continued surveillance to date suggests that breeding populations have not survived the winter in our state.

Industries that import into Michigan items that can hold water and serve as breeding sites for mosquitoes should consider taking precautions to kill mosquito larvae that may be present in these products.

Michigan residents can protect themselves from mosquito bites by:

  • Eliminating sources of standing water such as wading pools, old tires, buckets and containers by dumping water to prevent mosquito eggs from hatching or larvae from developing into biting adults.
  • Wearing long-sleeved shirts, long pants and socks when outdoors.
  • Applying an EPA-registered insect repellent according to label instructions.
  • Making sure doors and windows have tight-fitting screens.

For more information about mosquito-borne viruses and mosquito surveillance in Michigan, visit Michigan.gov/emergingdiseases.

Posted in Featured, OutdoorsComments Off on Asian tiger mosquitoes identified in Wayne County

Michigan residents urged to “Fight the Bite” 


OUT-Fight-the-Bite-mosquitoWith warmer weather upon us, it is important to take precautions against mosquito and tick bites.  The Michigan Departments of Health and Human Services, Natural Resources, and Agriculture and Rural Development are reminding all residents to protect themselves from mosquito and tick-borne diseases in Michigan and while traveling out of state.

“As we spend more time outdoors, it’s important to remember that a single bite from an infected mosquito can have serious health consequences,” said Dr. Eden Wells, chief medical executive for MDHHS. “The best way to protect yourself and your family against mosquito-borne illness is to prevent mosquito bites.”

Seasonal activity varies from year to year, but mosquitoes encountered in Michigan can carry illnesses such as West Nile virus (WNV) and Eastern Equine Encephalitis (EEE), and ticks can carry illnesses such as Lyme disease and Rocky Mountain spotted fever. International travelers may be at risk for exposure to other mosquito-transmitted diseases. People considering international travel, including Mexico, Central and South America, should consult the Centers for Disease Control and Prevention (CDC) travelers health page for specific health information about the country they are visiting.

“Horses and other animals can act as sentinels for mosquito-borne viruses such as EEE, which is why implementing preventive measures and vaccination is important,” said Dr. James Averill, MDARD’s State Veterinarian. “Additionally, dogs and domestic animals are susceptible to tick-borne diseases like Lyme Disease. I encourage all animal owners to work with a licensed veterinarian to make sure your animals stay healthy.”

Mosquito and tick-borne diseases can cause mild symptoms, severe infections requiring hospitalization, and even death in some cases. Nationally in 2015, there were 2,060 WNV cases and 119 deaths reported to the CDC, including 18 cases and two deaths in Michigan. Those with the highest risk of illness caused by WNV are adults 50 years of age and older.

Michigan is considered “low risk” for mosquito transmission of Zika, dengue, and chikungunya virus, as the mosquitoes that spread the diseases have not been found in the state. Zika is a virus that is newly emerged in the western hemisphere, and while its symptoms are not considered severe, the virus can cause birth defects in fetuses of pregnant women exposed to the virus. To date in 2016, there have been four travel-related cases identified in Michigan. Protection against mosquito-borne disease is as easy as remembering to take these key steps:

• Avoid mosquito bites: Use insect repellent according to label directions when outdoors and mosquitoes are biting. Look for EPA-labeled products containing active ingredients, such as DEET, Picaridin or oil of lemon eucalyptus). Re-apply as needed. Use nets or fans around outdoor eating areas to keep mosquitoes away. Start with a low-concentration product and reapply if necessary. Apply repellent on your hands and then rub it on the child and never apply repellent to children’s hands or their skin under clothing.

• Mosquito-proof homes: Fix or install window and door screens and cover or eliminate empty containers with standing water where mosquitoes can lay eggs.

• Help your community: Report dead birds to Michigan’s Emerging Diseases website to help track WNV and support community-based mosquito control programs.

• Vaccinate horses against WNV and EEE virus and work with your veterinarian.

• Pregnant women should not travel to areas with active Zika transmission. If they must travel, they should take precautions to prevent mosquito bites.

Michigan is also home to a number of tick species that will bite people and are typically found in wooded or brushy areas with tall grass and leaf litter. The ticks mostly commonly encountered in Michigan can carry Lyme disease, Rocky Mountain spotted fever and other human illnesses. Lyme disease is the most common tick-borne disease reported in the state with 148 human cases reported in 2015.

Many tick-borne diseases have similar symptoms. See your healthcare provider if you develop signs of illness such as a fever, body aches and/or rash in the days after receiving a tick bite or recreating in tick habitat. Early recognition and treatment can decrease the chance of serious complications. You can prevent tick bites by:

• Avoiding tick-infested areas. This is especially important in May, June, and July. If you are in tick infested areas, walk in the center of trails to avoid contact with overgrown grass, brush, and leaf litter at trail edges. Dogs and domestic animals can also be impacted, so using a tick preventative is recommended.

• Using insect repellent. Apply repellent containing DEET (20-30%) or Picaridin on clothes and on exposed skin. You can also treat clothes (especially pants, socks, and shoes) with permethrin, which kills ticks on contact or buy clothes that are pre-treated. Permethrin can also be used on tents and some camping gear. Do not use permethrin directly on skin. Always follow the manufacturer’s instructions when applying any repellents.

• Bathing or showering. Bathe or shower as soon as possible after coming indoors (preferably within two hours) to wash off and more easily find ticks that are crawling on you. Ticks can get a ride indoors on your clothes. After being outdoors, wash and dry clothing at a high temperature to kill any ticks that may remain on clothing.

• Performing daily tick checks. Always check for ticks after being outdoors, including your animals, even in your own yard. Because ticks must usually be attached for at least a day before they can transmit the bacteria that cause Lyme disease, early removal can reduce the risk of infection. Inspect all body surfaces carefully, and remove attached ticks with tweezers. Grasp the tick firmly and as closely to the skin as possible. With a steady motion, pull the tick’s body away from the skin. Do not be alarmed if the tick’s mouthparts remain in the skin. Cleanse the area with an antiseptic.

For more information about the diseases carried by mosquitoes and ticks, visit www.michigan.gov/emergingdiseases, or the CDC’s website at www.cdc.gov.

Posted in OutdoorsComments Off on Michigan residents urged to “Fight the Bite” 


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