||July - August 2009
The Buzz is a semi-monthly summary
used to disseminate important information about mosquitoes and
mosquito control in the City of Portsmouth. Above average rain fall
for the month of June has made for an extremely busy month. Mosquito
activity remains high as adult mosquito populations are elevated and
neighboring jurisdictions have reported finding mosquito viruses.
Portsmouth mosquito control efforts are currently at maximum
Most larval surveillance has been temporarily suspended. All
efforts have been directed towards treating catch basins.
Approximately 5,500 catch basins have been treated to date, the
remaining 3,000 will be treated over the next few weeks.
Mosquito trapping efforts
have shown decreasing numbers of adult
mosquitoes all over the city. The number of
different mosquito species has also decreased to
normal levels. One sample of mosquitoes tested
positive for Easter Equine Encephalitis (EEE) in
late July. The positive test confirms the
presence of EEE in the city limits. There is a
vaccine to protect horses, but not for humans.
The Portsmouth Health Department recommends the
following tips to reduce exposure to mosquitoes:
loose and light-colored
window and door screens in your
home are functional and in
repellent products registered
with the Environmental
Protection Agency such as
products containing DEET,
Picaridin, or Oil of Lemon
Eucalyptus. When using a product
containing DEET, no more than 50
percent DEET should be used for
adults and less than 30 percent
should be used for children.
Follow instructions when using
drain, or remove containers in
your yard where water collects,
such as old tires, potted plant
trays, buckets and toys.
Fill in or
drain root-ball holes (from
downed trees) or any depression
that holds water for more than a
standing water on tarps or flat
roofs, and in boats.
birdbaths and wading pools once
gutters and downspout screens
For additional, please call or visit the Virginia
Department of Health’s website at