What You Need To Know
Please find below the NJDOH vector-borne surveillance report for week 25.
Report highlights:
- Four additional mosquito pools tested positive for West Nile Virus (WNV) since last week’s report; two in Union County and one each in Bergen and Cape May counties. Fifteen mosquito pools have tested positive in 2025 in eight counties.
- The average number of Culex mosquitoes reported in the previous two weeks was highest in Hudson County, followed by Cumberland and Union 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).
- There have been no human or animal cases of WNV and no human, animal, or mosquito detections of Eastern equine encephalitis (EEE) or Jamestown Canyon virus (JCV) in 2025.
- The number of tick-related emergency department visits decreased sharply this week and is now consistent with 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.
Previous reports can be accessed anytime on our website at: https://www.nj.gov/health/cd/statistics/arboviral-stats/index.shtml