New In This Update
- More crows and mosquito pools have tested positive for the presence
of West Nile Virus. See “Crow Testing” and “Mosquito
- To date, 54 New Jersey residents have been approved for WNV
testing. One human in Camden County has tested positive; thirty-four
have tested negative, five 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 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.
- To date 287 birds have been submitted for testing by the Department
of Health and Senior Services Public Health and Environmental
Laboratory. Of those tested, 94 birds found in 16 counties have
been confirmed positive for the presence of WNV. Positive crows
have been found in Atlantic (27), Bergen (1), Burlington (4),
Camden (5), Cape May (11), Cumberland (2), Essex (2), Gloucester
(4), Mercer (2), Middlesex (2), Monmouth (3), Morris (4), Ocean
(22), Somerset (1), Union (3), and Warren (1) counties.
- To date, 6,626 mosquito pools have been tested for the presence
of WNV, and 270 positive pools have been found in Atlantic (10),
Bergen (64), Burlington (14), Camden (2), Cape May (6), Cumberland
(2), Essex (1), Gloucester (38), Hudson (32), Hunterdon (17),
Mercer (35), Monmouth (11), Morris (3), Ocean (8), Passaic (9),
Salem (4), Somerset (6), Sussex (1), and Union (5) counties.
- To date six horses from Burlington (2), Gloucester (1), Mercer
(1), and Salem (2) counties have tested positive for the presence
of WNV. 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 increases with the arrival of summer
and people should take steps to eliminate mosquito-breeding areas
around their homes and protect themselves and their families from
- 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, with five 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