Asian longhorned tick: Here’s the deal with Delaware’s newest residents
Asian longhorned tick: Here’s the deal with Delaware’s newest residents
Jenna Miller, Wochit
Spending more time outdoors in the summers means more opportunities to encounter ticks.
Delaware is home to a handful of tick species. Knowing how to avoid them and how to treat tick bites will keep you safe, especially if you find yourself in wooded, grassy areas or backyards this year.
Lyme disease cases have seen an increase in recent years. In Delaware, hundreds of cases of Lyme disease are documented each year, with New Castle County reporting more than Kent and Sussex counties.
We’ve waited months for warm weather to grace us so we can spend more time outdoors, but with warm weather comes pesky ticks.
As more people hike through summer grasses, play in backyards and camp in forests, ticks are taking the opportunity to shimmy up pantlegs, crawl through sleeves or land in your hair to do what they do best: feed on your blood.
Reports show some states are seeing an increased presence of ticks this spring and summer, and with them, a surge in Lyme disease cases.
Here’s the rundown of everything we know about tick presence, Lyme disease cases and tick bites in Delaware, including prevention, symptoms and treatment.
Wooded areas, tall grass or brush — the edges where woods and lawn meet — are desirable spots for ticks, along with leaf litter, beneath ground-cover plants and around woodpiles or stone walls where small mammals live.
From there, ticks can latch onto the birds, mammals or reptiles they prey on and spread to other organisms.
Ticks are active year-round if temperatures are above freezing.
What types of ticks are in Delaware?
While there are hundreds of species of ticks found worldwide and dozens in the United States, only a handful are commonly spotted in the First State.
Lone Star tick
The most common tick species in the area is the Lone Star tick, identifiable by a white dot on its back. Found all over the state, it is more common in Kent and Sussex counties.
“It’s described as being an aggressive biter,” said Ashley Kennedy, tick biologist at the Delaware Department of Natural Resources and Environmental Control. “The bite itself can be very painful, very itchy.”
A bite from a Lone Star tick could trigger flu-like illness or, in rare cases, alpha-gal syndrome, in which a person develops an allergy to red meat and other products made from mammals such as dairy.
Black-legged/deer tick
The black-legged/deer tick is not as common as other species but is more likely to infect you if it bites you.
One of the illnesses it can cause is Lyme disease, a bacterial infection that can spread to your joints, heart and nervous system if not treated early.
American dog tick
The American dog tick is the least likely to make you sick, but a small percentage of them carry Rocky Mountain spotted fever, Kennedy said.
Rocky Mountain spotted fever is a bacterial disease that begins with symptoms such as fever, headache and rash. It can be deadly if it is not treated early on with the correct antibiotics.
Asian longhorned tick
The newest Delaware tick species, first spotted in 2019, is the Asian longhorned tick.
This invasive species has a female-only population that can lay eggs without needing a male and occasionally bites.
What is Lyme disease?
A major concern when it comes to ticks is Lyme disease, the most common vector-borne disease in the U.S. but just one of 16 tickborne illnesses that can be passed to humans.
It is transmitted to humans through the bite of an infected blacklegged tick and can lead to an infection of the joints, hearts and nervous system if left untreated. There is no evidence that the disease can be passed from person to person, according to the CDC.
Lyme disease accounts for approximately 30,000 of the reported tick-borne illnesses each year. The CDC suggests this number is actually closer to 476,000 due to underreporting when it comes to the disease.
Lyme disease in Delaware
In accordance with the Delaware Division of Public Health’s section of Epidemiology, Health Data and Informatics, the entity cannot disclose the current number of Lyme disease cases in Delaware, said Laura Matusheski, media relations coordinator for DPH.
“Delaware sees cases of Lyme disease in all three counties year-round and continues to monitor disease trends. People who spend time outdoors in grassy or wooded environments are at risk for increased exposure,” the Division of Public Health stated.
The CDC defines Delaware as a high-incidence state for Lyme disease, ranking it among the top 10 states for cases in the United States.
DPH tracks yearly totals for the number of Lyme disease cases reported in Delaware, and the number of cases per 100,000 people per year over the last five years are as follows:
In 2018, there were 540 cases of Lyme disease statewide per 100,000 people. New Castle County contributed 302 cases, followed by Kent County at 87 and Sussex County at 131.
In 2019, there were 659 cases statewide. New Castle County contributed 437, followed by 86 in Kent County and 136 in Sussex County.
In 2020, 353 cases were reported statewide. New Castle County contributed 249, Kent County contributed 43 and Sussex County contributed 161.
In 2021, 354 cases were reported statewide. New Castle County reported 250, Kent County reported 40 and Sussex County reported 64.
In 2022, the most recent year with data, 385 statewide cases were reported. New Castle County documented 253, Kent County documented 64 and Sussex County documented 68.
As the data shows, New Castle County has reported the highest incidence rates of Lyme disease compared with Kent and Sussex counties, at time documenting cases that are four times greater than throughout the rest of the state.
What are the symptoms of Lyme disease?
Lyme disease bacterium can infect several parts of the body and cause different symptoms at different times. Some of these symptoms may be nonspecific and resemble other diseases, according to the Division of Public Health.
Early symptoms of Lyme disease include:
Headache.
Fatigue.
An expanding red rash, commonly referred to as a bulls-eye rash. It can appear anywhere on the body and be warm to the touch but is usually not itchy or painful. Not all affected individuals will develop a rash.
Fever and/or chills.
Muscle and joint aches.
If left untreated, the following symptoms can occur:
Heart palpitations and dizziness.
Severe joint pain and swelling, usually in large joints like the knees.
Severe headaches and neck stiffness due to meningitis.
Loss of muscle tone on one or both sides of the face, called “Bell’s palsy.”
Neurological problems like numbness or tingling in extremities and problems with concentration and short-term memory.
If you think you have Lyme disease, contact your health care provider. Most cases of Lyme disease can be cured with antibiotics taken over the course of a few weeks, but the severity of symptoms and subsequent treatment may vary this timeline.
Some patients experience chronic symptoms months and years after the infection has cleared.
How to keep ticks away from your home
When it comes to keeping ticks away from you and your home, there are several ways you can decrease the presence of ticks on your property.
Keeping your grass mowed and removing leaf litter, brush and tall weeds from the edges of your lawn are routine ways to keep ticks out.
Moving firewood, birdhouses and feeders away from your home. Wood should be stacked in a dry area.
Using plants that do not attract deer or exclude deer by using various types of fencing. Deer are the main food source for adult ticks.
Creating a 3-foot or wider wood chip, gravel or mulch barrier between your property and the woods.
Removing old furniture or trash, which ticks love to hide in, from your yard.
Keeping playground equipment, patios and decks away from yard edges and trees, instead placing them in sunny locations, if possible.
Tick bite prevention
Knowing where ticks usually dwell is the first step in preventing an encounter with them.
If you find yourself in a moist and humid environment that is near wooded or grassy areas, there are extra steps you can take to stay safe while in these places.
For those of you tasked with wading through fall leaves or tidying up the shrubs, wear light-colored clothing to allow you to see ticks crawling on you.
If you find yourself in an area ripe for ticks, be sure to wear long sleeves and pants. Tuck your pant legs into your socks and consider wearing a hair tie on your sleeves to prevent ticks from crawling into the openings of your clothes.
Other ways to prevent tick bites, according to DPH, include:
Applying tick repellent that contains DEET. This lasts only a few hours and needs to be reapplied as necessary. Adults should use a repellent containing less than 50% DEET. Children’s repellents should contain less than 30% DEET. Do not use repellents with DEET on infants under 2 months old.
Searching your body for ticks during and after an outing. Be thorough when checking under your arms, inside your belly button, in and around your ear, behind the knees, between the legs, around the waist and in and around all head and body hair.
Checking children and pets for ticks. Your beloved pet probably has no clue a tick just latched onto him for a free ride into the house after a round of fetch. Giving your kids another look after they check for ticks can’t hurt either.
Symptoms of a tick bite
If you suspect you have been bitten by a tick, many tickborne illnesses share similar signs and symptoms.
See your health care provider if you develop the following symptoms within a few weeks of a tick bite:
Fever or chills: All tickborne diseases can cause fever.
Rash: Lyme disease, Southern tick-associated rash illness, Rocky Mountain spotted fever, ehrlichiosis and tularemia can cause distinctive rashes.
Aches and pains: Tickborne diseases can cause headaches, fatigue and muscle aches.
Tick bite treatment
After spending the day outdoors, your tick check might alert you to some unwelcome hitchhikers on your body.
If you discover a tick on you or your pets, do not use home remedies like petroleum jelly or hot matches to remove the ticks. They do not work, the Division of Public Health said.
Instead, use these steps to help rid yourself of ticks:
Use fine-tipped tweezers or shield your fingers with a paper towel, rubber gloves or a tissue to remove ticks. Do not pick at them with bare hands.
Grasp the tick close to the skin surface and pull upward with steady, even pressure.
Do not squeeze, crush or puncture the body of the tick. Its fluids, such as saliva, body fluids and gut contents, may contain infectious germs.
After removing the tick, clean the removal spot with an antiseptic or soap water. Don’t forget to wash your hands afterward!
MILWAUKEE (AP) — Whooping cough is at its highest level in a decade for this time of year, U.S. health officials reported Thursday.
There have been 18,506 cases of whooping cough reported so far, the Centers for Disease Control and Prevention said. That’s the most at this point in the year since 2014, when cases topped 21,800.
The increase is not unexpected — whooping cough peaks every three to five years, health experts said. And the numbers indicate a return to levels before the coronavirus pandemic, when whooping cough and other contagious illnesses plummeted.
Still, the tally has some state health officials concerned, including those in Wisconsin, where there have been about 1,000 cases so far this year, compared to a total of 51 last year.
Nationwide, CDC has reported that kindergarten vaccination rates dipped last year and vaccine exemptions are at an all-time high. Thursday, it released state figures, showing that about 86% of kindergartners in Wisconsin got the whooping cough vaccine, compared to more than 92% nationally.
Whooping cough, also called pertussis, usually starts out like a cold, with a runny nose and other common symptoms, before turning into a prolonged cough. It is treated with antibiotics. Whooping cough used to be very common until a vaccine was introduced in the 1950s, which is now part of routine childhood vaccinations. It is in a shot along with tetanus and diphtheria vaccines. The combo shot is recommended for adults every 10 years.
“They used to call it the 100-day cough because it literally lasts for 100 days,” said Joyce Knestrick, a family nurse practitioner in Wheeling, West Virginia.
Whooping cough is usually seen mostly in infants and young children, who can develop serious complications. That’s why the vaccine is recommended during pregnancy, to pass along protection to the newborn, and for those who spend a lot of time with infants.
But public health workers say outbreaks this year are hitting older kids and teens. In Pennsylvania, most outbreaks have been in middle school, high school and college settings, an official said. Nearly all the cases in Douglas County, Nebraska, are schoolkids and teens, said Justin Frederick, deputy director of the health department.
That includes his own teenage daughter.
“It’s a horrible disease. She still wakes up — after being treated with her antibiotics — in a panic because she’s coughing so much she can’t breathe,” he said.
It’s important to get tested and treated with antibiotics early, said Dr. Kris Bryant, who specializes in pediatric infectious diseases at Norton Children’s in Louisville, Kentucky. People exposed to the bacteria can also take antibiotics to stop the spread.
“Pertussis is worth preventing,” Bryant said. “The good news is that we have safe and effective vaccines.”
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AP data journalist Kasturi Pananjady contributed to this report.
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The Associated Press Health and Science Department receives support from the Robert Wood Johnson Foundation. The AP is solely responsible for all content.
How a sperm and egg fuse together has long been a mystery.
New research by scientists in Austria provides tantalizing clues, showing fertilization works like a lock and key across the animal kingdom, from fish to people.
“We discovered this mechanism that’s really fundamental across all vertebrates as far as we can tell,” said co-author Andrea Pauli at the Research Institute of Molecular Pathology in Vienna.
The team found that three proteins on the sperm join to form a sort of key that unlocks the egg, allowing the sperm to attach. Their findings, drawn from studies in zebrafish, mice, and human cells, show how this process has persisted over millions of years of evolution. Results were published Thursday in the journal Cell.
Scientists had previously known about two proteins, one on the surface of the sperm and another on the egg’s membrane. Working with international collaborators, Pauli’s lab used Google DeepMind’s artificial intelligence tool AlphaFold — whose developers were awarded a Nobel Prize earlier this month — to help them identify a new protein that allows the first molecular connection between sperm and egg. They also demonstrated how it functions in living things.
It wasn’t previously known how the proteins “worked together as a team in order to allow sperm and egg to recognize each other,” Pauli said.
Scientists still don’t know how the sperm actually gets inside the egg after it attaches and hope to delve into that next.
Eventually, Pauli said, such work could help other scientists understand infertility better or develop new birth control methods.
The work provides targets for the development of male contraceptives in particular, said David Greenstein, a genetics and cell biology expert at the University of Minnesota who was not involved in the study.
The latest study “also underscores the importance of this year’s Nobel Prize in chemistry,” he said in an email.
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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.
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