New Jersey DOH Vector-borne surveillance report, week 36

Date:9/18/2026

Official Message No.:112758-9-18-2026-PHIN

Contact Info: George | george.keefer@doh.nj.gov

Kim | kim.cervantes@doh.nj.gov

Attachments: Yes Attachment 1

Please find attached the NJDOH vector-borne surveillance report for week 36.

Report highlights:

New Jersey is reporting one new West Nile Virus (WNV) case in Camden County. To date, there are six WNV cases and four presumptive viremic blood donors (PVD). Additional suspect cases are under investigation.
Since last week’s report, 136 additional mosquito pools tested positive for WNV, for a total of 1,052 positive pools, which is higher than historical trends. The cumulative minimum infection rate is highest in Mercer and Hudson counties. The average number of Culex mosquitoes, which are associated with WNV transmission, is highest in Warren and Hudson counties.
One mosquito pool tested positive for Eastern equine encephalitis (EEE) in Cape May County in week 35. No human or animal EEE cases have been reported in 2026.
Two additional mosquito pools tested positive for Jamestown Canyon Virus (JCV) in Monmouth County, for a total of five positive mosquito pools this season. No human JCV cases have been reported in 2026.
The number of Lyme disease cases reported this week continues to be below historical averages.
The number of tick-related emergency department visits increased and is slightly higher than historical averages.

N.J. vector-borne disease data is available online: https://www.nj.gov/health/cd/topics/vector_borne_disease_data_dashboard.shtml and can be accessed on the “Fight the Bite N.J.” webpage: https://www.nj.gov/health/cd/topics/vectorborne.shtml.

Previous reports can be accessed anytime on our website at: https://www.nj.gov/health/cd/statistics/arboviral-stats/index.shtml

This information has been broadcast to: Animal Health Professionals; Animal Control Officers; Veterinarians; Community Health Centers(FQHCs); Health Care Facilities/Other; Behavioral Health Services; Home Care Services; Long Term Care Facilities/Assisted Living; Long Term Care Facilities/Assisted Living (Monmouth County Health Dept.); Health Care Providers; Cardiologists (Monmouth County); Clinics (Monmouth County); Dentists (Monmouth County); Dermatologists (Monmouth County); Family Practice (Monmouth County); General Surgery (Monmouth County); Hematologists/Oncologists (Monmouth County); Infectious Disease (Monmouth County); Internal Medicine (Monmouth County); Neurologists (Monmouth County); Obstetricians/Gynecologists (Monmouth County); Ophthalmologists (Monmouth County); Pediatricians (Monmouth County); Plastic Surgery (Monmouth County); Podiatrists (Monmouth County); Psychiatrists (Monmouth County); Urgent Care (Monmouth County); Hospitals/Acute Care; Hospital CEO; Hospital Emergency Department Director; Hospital Emergency Preparedness Coordinator; Hospital ICU Director; Hospital Infection Control Practitioner; Hospital Medical Director; Hospital Nursing Director; Hospital Quality Liaison; Hospital Safety Officer; Hospital Security Director; Hospitals/Other; Hospitals/Veterans; Labs/Non-Sentinel; Labs/Sentinel; Labs (Monmouth County); Public Health Sector; Always Include (Monmouth County); Local Boards of Health; Local Health Agencies; NJLINCS Community; LINCS Coordinator; LINCS Coordinator Backup; LINCS Epidemiologist; LINCS Health Educator; LINCS Health Officer; LINCS Health Officer Assistant; LINCS Public Health Nurse; LINCS REHS; LINCS Team Member; LOCAL Epidemiologist; LOCAL Health Educators; LOCAL Health Officer; LOCAL Public Health; LOCAL Public Health Nurses; LOCAL REHS; Office of Emergency Management;