Current Suspected Overdose Deaths in Delaware for 2018: 241 logo

DHSS Press Release

Rita Landgraf, Secretary
Jill Fredel, Director of Communications
302-255-9047, Pager 302-357-7498

Date: May 30, 2013


(Dover) - Warm weather brings sunshine and short sleeves, but also brings biting, blood-seeking insects. The Delaware Division of Public Health (DPH) reminds Delawareans that simple precautions reduce a person's chances of getting tickborne or mosquitoborne infections this summer. The most common disease spread by ticks in Delaware is Lyme disease, which is transmitted to humans by the bite of infected deer ticks. Ticks are active all year, but during the spring and summer months when humans enjoy outdoor activities, people get tick bites and tickborne diseases more often than any other time of year. In 2011, Delaware had 873 confirmed cases of Lyme disease (96.4 cases per 100,000 population) - the highest incidence rate of Lyme disease in the nation. Symptoms can include a "bull's-eye" rash (seen in approximately half of Lyme disease cases in Delaware), fever, fatigue, headache, muscle and joint aches. Chronic joint, heart and neurological problems may occur. It usually takes 24-36 hours of attachment before a disease is transmitted from a tick to a person. Early diagnosis and treatment, which may include antibiotics, are key to good health outcomes. Anyone bitten by a tick should monitor their health closely and contact a physician if symptoms develop. Other tick-borne illnesses such as Rocky Mountain spotted fever and ehrlichiosis are diagnosed much less frequently in Delaware.

Diseases transmitted to humans from the bite of an infected mosquito include West Nile virus (WNV), Eastern Equine Encephalitis (EEE) and several other diseases that cause brain inflammation (encephalitis). And while Delaware has not had a confirmed human case of EEE since 1979, cases of WNV do exist. In 2003, there were 17 confirmed human cases of WNV in Delaware, two of which were fatal. During 2007, 2008 and 2011, one human case was confirmed each year.

Approximately 80 percent of human infections are mild and cause no apparent symptoms. Nearly 20 percent of those infected develop a mild illness (West Nile fever), which includes fever, body and muscle aches, headache, nausea, vomiting, and rash. A small percentage of patients, usually the elderly, develop severe neurological disease that results in meningitis or encephalitis.

DPH reminds residents to take the following protective measures to avoid tick and mosquito bites:



DPH does not recommend the use of home remedies such as petroleum jelly or hot matches for tick removal. These methods do not work and are potentially unsafe.



Further information regarding Lyme disease and tick prevention can be found at:
Further information regarding mosquito prevention can be found at: CDC:

For questions concerning mosquito control, please call Department of Natural Resources Environmental Control (DNREC) at:
New Castle County (302) 836-2555
Kent/Sussex Counties (302) 422-1512

For additional information regarding human disease, contact DPH, Bureau of Epidemiology at: 1-888-295-5156.

Delaware Health and Social Services is committed to improving the quality of the lives of Delaware's citizens by promoting health and well-being, fostering self-sufficiency, and protecting vulnerable populations.