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Vector Facts<br />
Our Goal<br />
The Clackamas County Vector Control District is responsible<br />
for control of flies and mosquitoes within Clackamas<br />
County. Control of these vectors is not intended to be<br />
total eradication since this concept is unachievable and<br />
environmentally unsound, requiring unacceptable quantities<br />
of pesticides. The goal of the District, therefore, is to limit<br />
the number of vectors, thus reducing annoyance and<br />
the likelihood of vector borne disease for people living<br />
in the county. Vector Control staff are happy to help you<br />
evaluate your yard for mosquito breeding sites. Please<br />
contact 503-655-8394. You can also visit our website at<br />
FighttheBites.com for helpful mosquito control information.<br />
Mount Hood<br />
Robert Crum
Fight<br />
theBites.com<br />
JANUARY 2018<br />
SUN<br />
31<br />
MON<br />
1<br />
TUE WED THU FRI SAT<br />
2 3 4 5<br />
6<br />
New Year’s Eve<br />
New Year’s Day<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
Martin Luther<br />
King Jr. Day<br />
21<br />
22<br />
23<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
31<br />
1<br />
2<br />
3<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Mt. Hood National Forest<br />
Tim Newman<br />
Vector Control Objectives<br />
To eliminate existing mosquito breeding sources<br />
and prevent new ones in order to permit full use and<br />
enjoyment of backyards and recreational facilities; To<br />
permit mosquito-free agricultural and industrial working<br />
conditions; And to protect public health and comfort.
Fight<br />
theBites.com<br />
FEBRUARY 2018<br />
SUN<br />
28<br />
MON<br />
29<br />
TUE WED THU FRI SAT<br />
30 31 1 2<br />
3<br />
Groundhog Day<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
Valentine’s Day<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
24<br />
Presidents’ Day<br />
25<br />
26<br />
27<br />
28<br />
1<br />
2<br />
3<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Mosquito Life Cycle<br />
Eggs - The most common mosquitoes lay egg rafts that<br />
float on the water. Each raft contains from 100 to 400<br />
eggs. Within a few days the eggs hatch into larvae.<br />
Larva - The larva or “wiggler” comes to the surface to<br />
breathe through a tube called a siphon. It sheds its skin<br />
or molts four times during the next several days. It grows<br />
rapidly between each molt. On the fourth molt it changes<br />
into a pupa.<br />
Pupa - The pupa or “tumbler” cannot eat. It breathes<br />
through two tubes on its back. The adult mosquito<br />
grows inside the pupa and, in two days or so, when it is<br />
fully developed, it splits the pupal skin and emerges to<br />
complete the life cycle or metamorphosis of the mosquito.<br />
Adult - The newly emerged adult rests on the surface of<br />
the water until it is strong enough to fly away and feed.<br />
Willamette Falls<br />
JPLDesigns
Fight<br />
theBites.com<br />
MARCH 2018<br />
SUN<br />
25<br />
MON<br />
26<br />
TUE WED THU FRI SAT<br />
27 28 1 2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
Daylight Savings<br />
Time Begins<br />
St. Patrick’s Day<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
24<br />
First Day of Spring<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
31<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Eagle Creek Trail Falls<br />
Robert Leon<br />
Fight the Bites<br />
Stay inside or in screened-in areas during sunrise, sunset<br />
and early evening. Cover up with long sleeves, long pants,<br />
socks and closed shoes. Plug in a fan to keep you cool,<br />
mosquitoes don’t like moving air. Light citronella candles,<br />
tiki torches or even a fire pit where safe. Keep mosquitoes<br />
from breeding in your yard by dumping any stagnate water.
Fight<br />
theBites.com<br />
APRIL 2018<br />
SUN<br />
1<br />
MON<br />
2<br />
TUE WED THU FRI SAT<br />
3 4 5 6<br />
7<br />
April Fool’s Day<br />
8<br />
National Public Health Week<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
24<br />
25<br />
26<br />
27<br />
28<br />
Earth Day<br />
29<br />
30<br />
1<br />
2<br />
3<br />
4<br />
5<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Malaria<br />
Malaria is much less likely to occur in Oregon due to the<br />
necessity for human reservoirs of the disease. Anopheles<br />
mosquitoes, the vectors of malaria, are found in some areas<br />
of Oregon, and there have been isolated cases where human<br />
reservoirs who have visited other countries temporarily<br />
provided a source of malaria infection to local residents.<br />
Woodburn Tulip Festival<br />
Tim Newman
Fight<br />
theBites.com<br />
MAY 2018<br />
SUN<br />
29<br />
MON<br />
30<br />
TUE WED THU FRI SAT<br />
1 2 3 4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
National Tourism Week<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
Mother’s Day<br />
20<br />
21<br />
22<br />
23<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
31<br />
1<br />
2<br />
Memorial Day<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Hit Mosquitoes<br />
Where They Live!<br />
Beware of dead water in:<br />
√√<br />
Bird Baths, Buckets & Barrels<br />
√√<br />
Boats, Bilges & Covers<br />
√√<br />
Ponds & Water Features<br />
√√<br />
Concrete & Plastic Pools<br />
√√<br />
Gutters & Downspouts<br />
√√<br />
Neglected Hot Tubs & Pools<br />
√√<br />
Tires, Cans & Wheelbarrows<br />
√√<br />
Plant Pots & Saucers<br />
√√<br />
Leaking Hoses & Sprinklers<br />
Trillium Lake<br />
Chinaface Photo<br />
√√<br />
Puddles, Troughs & Ditches
Fight<br />
theBites.com<br />
JUNE 2018<br />
SUN<br />
27<br />
MON<br />
28<br />
TUE WED THU FRI SAT<br />
29 30 31 1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
Flag Day<br />
17<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
Father’s Day<br />
First Day of Summer<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
National Mosquito Control Awareness Week<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
What to Know<br />
About Zika Virus<br />
Zika virus is spread by the bite of an infected Aedes<br />
aegypti or Aedes albopictus mosquito. Because of its<br />
cool climate, neither of these mosquito species lives<br />
in Oregon. However, travel to countries outside the<br />
U.S. can expose you to Zika infection. Remember to<br />
take precautions when traveling, including wearing<br />
repellent and avoiding places where mosquitoes<br />
are active. Women who are already (or expecting to<br />
become) pregnant should be especially cautious about<br />
exposure to Zika. For more information on Zika and<br />
the risk of infection, go to www.FighttheBites.com.<br />
Clackamas River<br />
www. visitestacada.com
Fight<br />
theBites.com<br />
JULY 2018<br />
SUN<br />
1<br />
MON<br />
2<br />
TUE WED THU FRI SAT<br />
3 4 5 6<br />
7<br />
Independence Day<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
31<br />
1<br />
2<br />
3<br />
4<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Breeding Sources<br />
We Control<br />
Chronic breeding sources created by standing water in<br />
street catch basins, sub-division drains, roadside ditches,<br />
flood channels, ravines, and similar places on public<br />
right-of-way are controlled by routine larviciding<br />
operations throughout the year as necessary. We work with<br />
city, county, state and federal agencies toward permanent<br />
correction of these sources.<br />
End of the Oregon Trail Historic Site<br />
www.orcity.org
Fight<br />
theBites.com<br />
AUGUST 2018<br />
SUN<br />
29<br />
MON<br />
30<br />
TUE WED THU FRI SAT<br />
31 1 2 3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
Clackamas County Fair<br />
21<br />
22<br />
23<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
31<br />
1<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
West Nile Virus<br />
& Encephalitis<br />
There are three forms of encephalitis transmitted<br />
by mosquitoes in Oregon: West Nile virus, St. Louis<br />
encephalitis and Western Equine encephalitis. They<br />
are carried into the area by wild birds that are infected<br />
elsewhere. These birds show no symptoms. Infected birds<br />
are then fed on by local mosquitoes that can pass the virus<br />
on to humans by future bites. Symptoms of encephalitis<br />
range from flu-like illness to severe brain involvement that<br />
can cause death. Western Equine encephalitis can affect<br />
horses and other equine animals, as well as humans.<br />
Clackamas River in Fall<br />
Victoria Ditkovsky
Fight<br />
theBites.com<br />
SEPTEMBER 2018<br />
SUN<br />
26<br />
MON<br />
27<br />
TUE WED THU FRI SAT<br />
28 29 30 31<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
Labor Day<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
21<br />
22<br />
First Day of Autumn<br />
23<br />
30<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Pumpkin Patch<br />
Norme Photos<br />
Mosquito-Borne<br />
Diseases<br />
The four important diseases affecting humans are West<br />
Nile virus, encephalitis, malaria and Chikungunya.<br />
Several of the 48 known species of mosquitoes in<br />
Oregon can carry diseases under the right conditions.<br />
When a female mosquito takes a blood meal, which she<br />
uses as nourishment for her developing eggs, she may<br />
transmit certain disease-causing organisms to humans<br />
and other animals.
Fight<br />
theBites.com<br />
OCTOBER 2018<br />
SUN<br />
30<br />
MON<br />
1<br />
TUE WED THU FRI SAT<br />
2 3 4 5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
Columbus Day<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
31<br />
1<br />
2<br />
3<br />
Halloween<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Facts About<br />
Mosquito Fish<br />
Mosquito fish do not lay eggs, but rather give birth to well<br />
developed and very active young. These fish therefore<br />
require no special environment for depositing and<br />
hatching eggs. The earliest broods of the season are born<br />
in April and May; however, they breed throughout the<br />
summer with 50 to 100 young in a single brood. The young<br />
are approximately one-fourth inch in length when born and<br />
are ready to begin destroying mosquito larvae at once.<br />
Gambusia grow rapidly, reaching a maximum size of about<br />
three inches.<br />
Christmas Tree Farm<br />
Robert Crum
Fight<br />
theBites.com<br />
NOVEMBER 2018<br />
SUN<br />
28<br />
MON<br />
29<br />
TUE WED THU FRI SAT<br />
30 31 1 2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
Daylight Savings<br />
Time Ends<br />
Election Day<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
Veterans Day<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
24<br />
Thanksgiving Day<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
1<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Mt. Hood National Forest<br />
Zack Frank<br />
Facts About Mosquitoes<br />
1. All mosquitoes must have water to complete<br />
their life cycle.<br />
2. Only seven days are required to complete the<br />
mosquito life cycle.<br />
3. Mosquitoes do not develop on grass or shrubbery,<br />
although adults frequently rest in these areas.<br />
4. Only female mosquitoes bite to obtain a blood<br />
meal. Male mosquitoes feed on plant juice.<br />
5. Female mosquitoes may live as long as three<br />
weeks to several months.
Fight<br />
theBites.com<br />
DECEMBER 2018<br />
SUN<br />
25<br />
MON<br />
26<br />
TUE WED THU FRI SAT<br />
27 28 29 30<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
21<br />
First Day of Winter<br />
22<br />
23<br />
24<br />
25<br />
Christmas Day<br />
26<br />
27<br />
28<br />
29<br />
30 31 1 2 3 4 5<br />
New Year’s Eve<br />
New Year’s Day<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Vector Facts<br />
Programs & Speakers<br />
During the winter months, programs are offered to schools<br />
and service organizations in the county. Presentations<br />
include the biological aspects of vector control and the<br />
species involved. To arrange a speaker, call the Vector<br />
Control office at 503-655-8394.<br />
Frosty Field<br />
Andrea Gingerich
Fight<br />
theBites.com<br />
JANUARY 2019<br />
SUN<br />
30<br />
MON<br />
31<br />
TUE WED THU FRI SAT<br />
1 2 3 4<br />
5<br />
New Year’s Eve<br />
New Year’s Day<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
21<br />
22<br />
23<br />
24<br />
25<br />
26<br />
Martin Luther<br />
King Jr. Day<br />
27<br />
28<br />
29<br />
30<br />
31<br />
1<br />
2<br />
CLACKAMAS COUNTY VECTOR CONTROL DISTRICT<br />
503-655-8394 | www.clackamas.us/vector
Check out our videos at<br />
FighttheBites.com<br />
Get your vector gear<br />
We’re everywhere around<br />
Clackamas County<br />
Call us at 503-655-8394 to get your FREE<br />
vector gear, including tote bags, can drink<br />
koozies, magnets, stickers and tattoos!<br />
Front cover image:<br />
Mt. Hood & Trillium Lake<br />
Peter West Carey<br />
1102 ABERNETHY ROAD | OREGON CITY, OR 97045 503-655-8394 | www.clackamas.us/vector
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