Public Health Info: New Jersey DOH Vector-borne Surveillance Report, Week 30

What You Need To Know

Please find below the NJDOH vector-borne surveillance report for week 30.

Report highlights:

One hundred eighteen additional mosquito pools tested positive for West Nile Virus (WNV) since last week’s report, for a total of 261 positive mosquito pools in 19 counties, less than 322 positive pools this time last year, but higher than the 5-year average.
The average number of Culex mosquitoes reported in the previous two weeks was highest in Hudson County, followed by Cumberland and Salem counties. Culex mosquitoes are predominantly responsible for WNV transmission and are often found around the home, taking advantage of standing water sources (e.g., buckets, wheelbarrows, tarps).
Two additional mosquito pools tested positive for Jamestown Canyon Virus (JCV) in Morris County in week 30, for a total of three positive mosquito pools in Morris and Sussex counties.
There have been no human or animal cases of WNV or JCV and no human, animal, or mosquito detections of Eastern equine encephalitis (EEE) in 2025.
One mosquito pool tested positive for La Crosse Encephalitis Virus (LACV) in Sussex County in week 26.
The number of tick-related ED visits continued to decline but is above the 5-year average.

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