New In This Update
- One new human case test positive for West Nile Virus.
- Three new horses have tested positive for West Nile Virus.
- More mosquito pools have tested positive for the presence of
West Nile Virus. See “Crow Testing” and “Mosquito
- To date, 185 New Jersey residents have been approved for WNV
testing. There are thirty-two positive human cases, including
two blood donors; one hundred twenty-one have tested negative,
eighteen are pending, and the samples have not yet been received
for the remainder. 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
- 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.
- To date 1,472 crows have been 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.
- To date, 8,743 mosquito pools have been tested for the presence
of WNV, and 358 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 (14) counties.
- To date one hundred and fifty horses have tested positive for
the presence of WNV; they were found in 16 counties: Atlantic
(9), Burlington (13), Camden (5), Cape May (5), Cumberland (8),
Gloucester (27), Hunterdon (13), Mercer (3), Monmouth (18), Morris
(1), Ocean (8), Passaic (1), Salem (27), Somerset (3), Sussex
(4), and Warren (5). 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
- The risk of WNV infection has increased with the arrival of
summer and people should take steps now to eliminate mosquito-breeding
areas around their homes and protect themselves and their families
- 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 43 people have been diagnosed with
WNV between 1999 and 2002. Lab testing confirmed WNV infection
in these residents, with two resulting fatalities. 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