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2022 LARVAL MOSQUITO RESULTS

 

Species

Division

Total

Central

Eastern

Southern

Western

Aedes albopictus

1

0

0

0

1

Aedes stimulans

12

12

12

5

41

Aedes triseriatus

3

4

3

0

10

Aedes japonicus

5

5

4

5

19

Aedes vexans

26

25

30

14

95

Aedes sticticus

0

4

0

0

4

Anopheles quadrimaculatus

1

1

0

0

2

Culex restuans

23

39

28

10

100

Culex pipiens

23

19

24

2

68

Culex territans

0

1

3

1

5

Culex erraticus

1

0

0

1

2

Coquillettidia perturbans

1

1

1

0

3

Psorophora ciliata

1

0

0

0

1

Psorophora howardii

1

0

0

0

1

Uranotaenia sapphrina

1

3

1

0

5

Total Larva Identified

99

114

106

38

357

 

 

SCCMAD RAMP TEST RESULTS

SCCMAD RAMP TEST RESULTS 

Year

# Tests

# Positive

% Positive

# Human WNV cases in Cook County 

# Human WNV cases in Illinois

2004

160

18

11.25

23

60

2005

301

82

27.24

134

252

2006

425

72

16.94

86

215

2007

638

33

8.97

33

101

2008

258

12

4.65

9

20

2009

201

4

1.88

1

5

2010

217

19

8.76

30

61

2011

285

22

7.72

22

34

2012

381

104

27.3

174

290

2013

277

32

11.55

60

117

2014

299

17

5.69

24

44

2015

349

29

8.31

27

77

2016

359

47

13.13

90

136

2017

271

45

16.61

52

86

2018

274

47

17.15

104

174

2019

319

11

3.45

14

26

2020

424

32

7.55

31

37

2021

709

90

12.69

20

33

2022

1438

116

8.07

9

23

 

 

2022 Field and Laboratory Report

The average cumulative total for all rain gauges which were reported from April 17th to October 3rd was 22.71 inches. This is about average for the season. However, the second half of the season was extremely wet starting at the end of June. One of the rain gauges located in the Southern Division (South Chicago Heights) was almost double the average. Temperatures were average for the season.

 

Field Operations

A total of 79,648 adult Culex spp. collected from 30 Gravid Traps, an average of 18.20 mosquitos per tap per night. Of these 79,648 Culex spp., 54,758 were tested for West Nile Virus via Rapid Analyte Measurement Platform (RAMP).

A BG Pro trap was set out at a location to collect Aedes spp specifically Aedes albopictus It was set out for a total of 45 trap nights and collected 132 mosquitos. Of these 132 collected, there were 65 Culex spp. 52 Aedes vexans 15Aedes aponicus There was no Aedes albopictus found, but a total of 157 collected from 12 Gravid traps this season.

 

Laboratory Function:

Laboratory personnel provide District management with information for planning and conducting an effective and efficient mosquito control program. They survey the larval and adult mosquito populations and test adult mosquitos for the presence of West Nile Virus.

 

Larval Mosquito Survey:

Larvarciding is our primary mosquito control activity. This method involves locating mosquito breeding sites and killing them before they can become a nuisance or transmit diseases. Field Operators take larval samples from some of these locations and return them to the lab for identification. During the 2022 season the laboratory identified a total of 357 larva samples from 129 sources. A total of 15 species were identified. From these 357 samples, 100 (28.01%) were Culex restuans 95 (26.61%) were Aedes vexans and 68 (19.05%) were Culex pipiens

A total of 1,438 pools were tested for West Nile Virus using the RAMP system. 116 (0.08%) of these were positive for West Nile Virus from 21 locations. As of November 1st, 2022, there were 29 confirmed human cases reported in the state of Illinois, 9 were in Cook County and 0 were within SCCMAD oundaries