Use repellent on yourself and pets, wear long pants if walking or hiking, avoid tall grass and check for ticks after spending time outdoors.
Most New Yorkers with tick-borne diseases are bitten by a tick while visiting or working in areas outside of New York City. However, Staten Island and parts of the northern Bronx are home to many species of ticks that can also transmit tick-borne diseases.
May 2, 2023 — The Health Department urges New Yorkers to protect themselves and their families from tick-borne diseases as summer approaches and people begin to travel and engage in outdoor activities. The most common tick-borne diseases diagnosed among New Yorkers is Lyme disease, followed by anaplasmosis and babesiosis.
“Spring and summer are the perfect time to be outdoors hiking, cycling or getting together with friends for a picnic,” said Health Commissioner Dr. Ashwin Vasan. “New York City and the wider region have a bevy of natural beauty and outdoor attractions that should be enjoyed by New Yorkers, and the best way to do so safely is to follow some simple precautions to prevent tick bites and reduce the risk of tick-borne illness. Use tick repellent, keep grass cut short, wear long sleeves and pants when possible and conduct tick checks after spending time in wooded, bushy or tall grass areas. Simple tips like these will help you enjoy nature and the outdoors safely this season.”
In 2022, there were 2,018 cases of Lyme disease reported by New Yorkers. Of those cases, 1,338 were new diagnoses and the remaining 680 were new, positive results for cases from previous years. In 2021, there were 820 reported cases of Lyme disease. The increase in cases can partially be attributed to a change in the national case definition and reporting guidelines. Additionally, in 2022, New Yorkers were diagnosed with 43 cases of anaplasmosis and 63 cases of babesiosis. Other tick-borne diseases, like ehrlichiosis, Rocky Mountain spotted fever, Borrelia miyamotoi disease, and Powassan virus encephalitis, are rare but still occur. In addition to human disease surveillance, the City also monitors and tests tick populations in several locations across the five boroughs.
Most New Yorkers diagnosed with Lyme disease and other tick-borne diseases, including anaplasmosis, babesiosis and ehrlichiosis, are residents of Manhattan and Brooklyn who acquire the condition while traveling to surrounding areas, including Long Island and upstate New York, and other areas where the blacklegged (deer) and lone star ticks are well established. However, these ticks are also present throughout Staten Island and the northern Bronx.
Early symptoms of Lyme disease include a skin rash that expands over several days, fever, headache, muscle and joint aches and swollen lymph nodes. In serious cases, if left untreated, the infection may spread to the joints, heart or nervous system.
Tick surveillance by the Health Department continues to find the American dog tick in all boroughs. The blacklegged tick, which can spread Lyme disease, anaplasmosis and babesiosis, is widely established in Staten Island and areas of the Bronx, including Pelham Bay Park and Hunter Island, but not in other areas of NYC. The Asian longhorned and lone star ticks are also well established in Staten Island and parts of the Bronx, and the Gulf Coast tick is in Staten Island. The Asian longhorned ticks have not been shown to transmit disease to people in the US. Lone star ticks can spread ehrlichiosis and have also been associated with the emergence of a food allergy to red meat known as alpha-gal syndrome. Some Gulf Coast ticks found in Staten Island tested positive for R. parkeri, which causes Rickettsia parkeri rickettsiosis, but no human infections have been reported. To learn more about ticks in New York City and the diseases they spread, visit the Ticks webpage.
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