Public Health Info: New Jersey DOH Vector-borne Surveillance Report, Week 32

What You Need To Know

Please find below the NJDOH vector-borne surveillance report for week 32.

Report highlights:

One West Nile Virus (WNV) presumptive viremic blood donor (PVD) was reported this week from Sussex County. No human or animal cases of WNV have been reported to date, but reports are under investigation. One hundred twenty-two additional mosquito pools tested positive for WNV since last week’s report, for a total of 506 positive mosquito pools in all 21 counties.
The average number of Culex mosquitoes reported in the previous two weeks was highest in Salem County, followed by Hudson and Sussex 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).
To date, three mosquito pools have tested positive for Jamestown Canyon Virus (JCV) in Morris (2) and Sussex counties and one mosquito pool tested positive for La Crosse Encephalitis Virus (LACV) in Sussex County.
There have been no human or animal cases of JCV and no human, animal, or mosquito detections of Eastern equine encephalitis (EEE) in 2025.
There have been two cases of Powassan virus (POWV) reported in Morris and Monmouth counties.
The number of tick-related ED visits continued to decline but remains 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.