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, 35 New Jersey residents have been approved
for WNV testing. Twenty-one have tested negative and none have
tested positive. 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. Testing results are sent to the
CDC for confirmation.
- To date, 157 crows have been accepted for testing
by the Department of Health and Senior Services Public Health
and Environmental Laboratory. Of those tested, 14 crows found
in 9 counties have been confirmed positive for the presence of
WNV. Positive crows have been found in Atlantic (2), Burlington
(1), Gloucester (2), Middlesex (2), Monmouth (1), Ocean (3) and
Passaic (1), Union (1), and Warren (1) counties.
- To date, 3,315 mosquito pools have been tested for
the presence of WNV, and 10 positive pools have been found in
Atlantic (1), Bergen (3), Gloucester (1), Hunterdon (1), *Monmouth
(1), Morris (1), Somerset (1), and Warren (1) counties.
- Note: The Monmouth positive was from a pool sampled
before the start of the current WNV season, and represents WNV
infection from last year.
- 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 atwww.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 from infection.
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 agencies.