07/29/2010
The WNV is beginning to escalate throughout the Chicago area
including our district. We have tested 1398 mosquito pools and
have had 22 positive pools. While the percentage of positive
pools is still fairly low, it is increasing and with the warm
temperatures could do so quickly. It is important to continue
protecting yourself from mosquitoes outdoors as well as checking
around your residence for holes in window screens or poor-fitting
air conditioners that would allow mosquitoes to enter. With the
heavy rains last weekend, we expect a significant increase in the
nuisance mosquitoes over the next few days. These mosquitoes do
not carry WNV but will be very annoying. In addition, we are
beginning to do some adult mosquito spraying in the evening hours
to try and reduce the mosquito population that may be infected
with WNV. Locations where we will be conducting adult mosquito
control will be posted on this web site and after hours will be
on an answering machine at 708-447-1765.

07/20/2010
We have tested 1075 pools of mosquitoes for the presence of WNV.
Only one has been positive for the virus. Other districts in the
Chicago area have also been finding positive mosquito pools.
While the incidence of the virus is still quite low this season,
the virus is beginning to build. Precaution should be taken when
outdoors especially at dusk and dawn. The mosquitoes that cause
annoyance are still out in numbers but because of the drier
weather they are beginning to decrease.

06/28/2010
With the many episodes of heavy rains recently, the numbers of
nuisance mosquitoes keeps building and building. Not only do
the rains keep sources filled and new eggs hatching, it also
prevents us from getting to all the sources in the District to
treat them before the adult mosquitoes emerge. Fortunately, the
testing for West Nile Virus (WNV) in the mosquitoes has been all
negative. While there have been no positive mosquito pools, the
virus is still in the area and repellents should be used outdoors
especially at dawn and dusk.

05/03/2010
Early season mosquito larvae have been present for several weeks
now. Field crews are out treating sites that have mosquito larvae.
It has been a fairly dry spring so the sites that are holding
water with mosquitoes developing are not large.