Fordham Tri-State Tick Risk

Tick Index for September 25, 2026

3 out of 10: LOW RISK

Tick Index

Tick Fact of the Week

“General Hospital,” a TV soap opera that’s been on the air since 1963, has a current storyline involving a tick bite that may lead to solving a murder mystery, or giving someone alpha-gal syndrome. It’s not clear where this story is going but CDC is somehow involved. If you’re thinking “you can’t make this stuff up,” think again. 

About the Fordham Tick Index

The Fordham Tick Index is an estimate of the risk of being bitten by a nymphal or adult deer tick in the tri-state area, encompassing southern New York, Connecticut, and northern New Jersey. This index measures risk relative to other times of year.  

Both the nymph and adult tick are active at this time of year, although the smaller nymph is responsible for many more cases of Lyme disease. For more information about preventing tick bites, controlling ticks, Lyme disease and other illnesses ticks carry, visit the Centers for Disease Control and Prevention.

The Fordham Tick Index is provided as a weekly public service by Fordham University and is based on both current and historical data from the Louis Calder Center, Fordham's Biological Field Station in Westchester County, N.Y. It is an estimate only. Actual risk may vary geographically. Therefore, always take precautions to prevent tick bites when outdoors.

Tick Risk Map 

Regional Map for Tick Index including: Manhattan, Bronx, Queens, Brooklyn, Staten Island, Nassau, Suffolk, Hudson, Essex