New In This Update
- Final testing results for the 2003 season.
- In 2004, positive test results were received on two additional
human cases, bringing to 34 the total number of WNV cases for
the 2003 season. There was one additional death, for a total of
- The 33rd case was a 75-year-old Cherry Hill (Camden County)
man. The patient was admitted to the hospital on September 2,
2003 and died on September 15. The cause of death was listed as
inflammatory liver disease and atrial fibrillation.
- The 34th case was a 47-year-old Sewell (Gloucester County)
woman who developed symptoms on October 1, 2003 and has since
- In total, 185 New Jersey residents have been approved for WNV
testing. There are thirty-four positive human cases, including
two blood donors; one hundred forty have tested negative, and
the remaining eleven are classified as probable because confirmatory
follow up samples were not received for them. Blood and/or spinal
fluid samples from these individuals were tested for the presence
of WNV. These individuals either had symptoms or signs that met
the established WNV testing criteria.
- Human testing for WNV is being conducted at the New Jersey Department
of Health and Senior Services’ Public Health and Environmental
Laboratory in Trenton and at public health labs in other states.
- During the 2003 season, 1,472 crows were submitted for testing
by the Department of Health and Senior Services Public Health
and Environmental Laboratory. Of those tested, 509 crows found
in 21 counties have been confirmed positive for the presence of
WNV. Positive crows have been found in Atlantic (54), Bergen (7),
Burlington (35), Camden (30), Cape May (12), Cumberland (20),
Essex (7), Gloucester (37), Hudson (1), Hunterdon (44), Mercer
(15), Middlesex (23), Monmouth (46), Morris (27), Ocean (66),
Passaic (17), Salem (11), Somerset (11), Sussex (1), Union (6),
and Warren (39) counties.
- During the 2003 season, 8,743 mosquito pools have been tested
for the presence of WNV, and 359 positive pools have been found
in Atlantic (21), Bergen (53), Burlington (8), Camden (4), Cape
May (6), Cumberland (5), Essex (13), Gloucester (45), Hudson (12),
Hunterdon (33), Mercer (28), Middlesex (20), Monmouth (15), Morris
(10), Ocean (16), Passaic (14), Salem (8), Somerset (15), Sussex
(10), Union (8), and Warren (15) counties.
- Equine testing is conducted by the New Jersey Department of
Agriculture’s animal health laboratory in Trenton and positive
results are sent to the National Veterinary Services Lab (NVSL)
in Ames, Iowa for confirmation. For more information, visit the
Department of Agriculture web site at www.state.nj.us/agriculture.
Additional Information & Advisories
- Among the personal precautions residents can take now are such
measures as eliminating standing water on their own property (such
as clearing clogged gutters, draining flower pots, recycling old
car tires, etc.), and repairing window and door screens. In the
spring, summer, and fall residents can spray insect repellent
on their clothing and exposed skin in accordance with labeling
directions, wear long sleeved shirts and pants when outdoors,
or curb outdoor activities at dawn, dusk and during the evening.
- The West Nile virus, an arboviral disease, is transmitted through
the bite of a mosquito that has picked up the virus by feeding
on an infected bird. WNV is not directly transmitted from birds
to humans. WNV infection generally causes no symptoms or just
mild, flu-like symptoms; however, the elderly are at higher risk
of more severe disease.
- In New Jersey, a total of 76 people have been diagnosed with
WNV between 1999 and 2003. Lab testing confirmed WNV infection
in these residents. WNV activity (identified from avian, equine
and/or mosquito surveillance) has been detected in every county
in New Jersey.
- New Jersey's WNV surveillance, control and prevention activities
involve the coordinated efforts of a number of federal, state
and local agencies. These include the New Jersey Departments of
Health and Senior Services, Environmental Protection, and Agriculture,
the CDC, the State Mosquito Control Commission, the Rutgers Mosquito
Research and Control Unit, and local health and mosquito control