Health Matters

The Bugs of Summer: Ticks, Skeeters, and When to Worry

Jun. 17, 2013

Oh, if only all insects could be butterflies and lightning bugs! Alas, on long summer days, pesky ticks and mosquitoes round out the mix.

Are their bites just nuisances, bringing about rashes, maybe a relentless itch? What about notorious bug-borne illnesses, like Lyme and West Nile? For the facts, we spoke with infectious diseases specialist Dr. Ghinwa Dumyati.


Health Matters: Do local insects harbor serious disease risks?

Dumyati: That’s a tricky question, because it depends on the bug. They could. But there’s a big gap between what’s possible and what’s probable.

The good news is that, in Upstate New York, bites from ticks and mosquitoes don’t often bring about Lyme or West Nile. That doesn’t mean the risk is inexistent—just that it’s relatively small for our area. Still, there are simple, important steps you should take to protect yourself.

Health Matters: Heartening news. Let’s start with Lyme.

Dumyati: Tick-borne bacterial infection can bring about a host of aches, pains, rashes even neurological troubles in the gravest cases. Infected deer ticks, which transmit Lyme disease, can be found throughout New York state—but again, the risk of getting infected after a tick bite is much lower in our region compared to other parts of the state, like Long Island and the lower Hudson Valley.

That said, we’re smack in the middle of tick season. They become active when the weather stays above freezing, usually from April through November. The time of greatest concern is in late spring and early summer; these nymphal-stage ticks are small as a sesame seed, and hard to see.

Some important things to note: Not all ticks are infected with Lyme. And, for a Lyme-infected tick to possibly pass along the bacteria, it needs to feed for at least 36 hours. The trouble is that many don’t feel the tick’s bite, so you need to vigilant about stripping down, showering, and checking yourself after you’ve spent time outdoors—especially in areas with higher grass or leaf litter. Simple precautions help, too, like applying insect repellant (look for stuff with  more than 20 percent DEET), sticking to the middle of trails, tucking your pants into your socks, and cycling your dirty clothes into the dryer for an hour on high-heat (to kill stowaways). Be sure to check over your dog, too, if he or she joined in on your hike.

Health Matters: What if you find a tick on you?

Dumyati: Don’t panic. Grab a pair of fine tweezers and take hold of the insect’s mouth-area, then lift. Don’t smush the bug’s body. If the bug is engorged, or if you’re worried about incomplete removal, call your doctor. Most (but not all) infected people see a bull’s eye patch emanating from the bite site. Other early symptoms include chills, fever, headache, or a stiff neck. New York State’s health department offers a FAQ website with much more info, here.

Health Matters: Got it. Now shifting gears: What about West Nile?

Dumyati: It can be hard to predict our region’s risk overall for West Nile, but in recent years, it’s been minimal in our area compared to other regions of the US. Even so, we’ll have to wait and see; things tend to pick up around late August.

Health Matters: How would you know if you were infected?

Dumyati: You might not. Many people don’t have symptoms. Mild cases might give rise to a fever, headache, or skin rash, and most “victims” recover completely. It poses a bigger threat to immune-compromised and elderly persons; they suffer more severe disease. Extreme, rare cases might include convulsions, muscle weakness, paralysis, and even dangerous infection of the brain (meningitis/encephalitis). Again, this is uncommon. You can learn more at mosquito-transmitted sickness on the state health department’s website, here. The same precautions I mentioned earlier—bug spray, etc.—are useful. Make sure window and door screens are free of rips and tears, too. Rid your yard of stagnant water, too; it’s a breeding ground for mosquitoes. Change out waters in birdbaths. Watch for empty containers that collect rainwater, clogged gutters, and swamp-like swimming pools.



Ghinwa K. Dumyati, M.D.Ghinwa Dumyati, M.D., associate professor of Medicine at URMC, brings expertise tracking how bacteria and viruses spread both in hospitals and the healthy community. Her work with the New York State Emerging Infections Program, for instance, helps the CDC keep tabs on national public health threats, like flu, MRSA and C. diff. Locally, she works hard to make Rochester-are health care settings safer, leading multi-hospital projects aimed at quashing bacterial infections, like C. diff. Dumyati directs communicable disease surveillance and prevention at URMC’s Center for Community Health.