NSW Arbovirus Surveillance & Vector Monitoring Program
Griffith 2001-2002
Mosquito/Chicken Results

Nearby Locations

Leeton Deniliquin Lake Cargelligo

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News & Comments

Note that for mosquito numbers 0 - 50 mosquitoes = "Low", 51 - 100 = "Medium",
101 - 1,000 = "High", 1,001 - 10,000 = "Very High", >10,000 = "Extreme".

7/5/2002: All chickens tested negative for flaviviruses from the 22/4 and 29/4 bleeds.

30/4/2002: Both sites trapped 'low' mosquito numbers.

23/4/2002: Both sites trapped 'low' mosquito numbers.

19/4/2002: All chickens tested negative for flaviviruses from the 1/4, 8/4 and 14/4 bleeds.

16/4/2002: Mosquito numbers have declined notably, with 'low' numbers trapped at Hanwood, although Willbriggie had a 'high' collection of 110, dominated by 63 Culex annulirostris.

9/4/2002: The 'very high' collections at Willbriggie continue with 782 mosquitoes trapped, dominated by 657 Anopheles annulipes. Hanwood had 'medium' numbers (95), with 69 Anopheles annulipes

4/4/2002: All chickens tested negative for flaviviruses from the 25/3 bleed.

2/4/2002: Mosquito numbers were unseasonally high this week. Hanwood trapped 'medium' numbers (91), with 66 Anopheles annulipes. Willbriggie yielded 'high' numbers (649), with 576 Anopheles annulipes

28/3/2002: All chickens tested negative for flaviviruses from the 11/3 & 18/3 bleeds.

26/3/2002: Mosquito numbers are still declining but well above average. Hanwood had a 'medium' collection of 85, including 47 Anopheles annulipes. Willbriggie yielded 'high' numbers (227), with 136 Anopheles annulipes

20/3/2002: All chickens tested negative for flaviviruses from the 4/3 bleed.

19/3/2002: Numbers were well down upon the previous week, although 'high' from both sites. Hanwood collected 130 mosquitoes, with 78 Culex annulirostris. Willbriggie trapped 170, including 117 Culex annulirostris. Willbiggie

12/3/2002: Collections have remained up and are well above average this week. Hanwood had a 'high' collection (390), with 305 Culex annulirostris. Willbriggie continues to trap 'very high' numbers (1900), including 1451 Culex annulirostris and 436 Anopheles annulipes

6/3/2002: Mosquito collections were around average this week. Hanwood had a 'high' collection of 319 mosquitoes, with 212 Culex annulirostris. Willbriggie trapped 'very high' numbers (2209), including 1354 Culex annulirostris and 845 Anopheles annulipes

6/3/2002: All chickens tested negative for flaviviruses from the 25/2 bleed.

26/2/2002: Collections were up this week and around double the average. Hanwood had a 'high' collection of 493 mosquitoes, with 239 Culex annulirostris and 248 Anopheles annulipes. Willbriggie had 'very high' numbers (4756), with 1010 Culex annulirostris and 3737 Anopheles annulipes

20/2/2002: All chickens tested negative for flaviviruses from the 18/2 bleed.

19/2/2002: Below average collections continue, although numbers were 'very high' from Hanwood. All up, Hanwood trapped 1266 mosquitoes, with 220 Culex annulirostris and 1048 Anopheles annulipes. Willbriggie had a 'high' catch of 563, with 460 Culex annulirostris.

13/2/2002: All chickens tested negative for flaviviruses from the 11/2 bleed.

12/2/2002: Both sites had below average collections, although were 'high' in number. Hanwood trapped 514 mosquitoes, with 401 Culex annulirostris. Willbriggie trapped 420, with 344 Culex annulirostris.

6/2/2002: All chickens tested negative for flaviviruses from the 4/2 bleed.

5/2/2002: Numbers were 'low' from both sites, with the heavy rain.

31/1/2002: All chickens tested negative for flaviviruses from the 28/1 bleed.

29/1/2002: Numbers continue to rise, but are still well below average. Hanwood had close to 'very high' numbers with a collection of 923 mosquitoes, dominated by Culex annulirostris (495) and Anopheles annulipes (410). Willbriggie trapped 'very high' numbers (1697), with 683 Culex annulirostris and 898 Anopheles annulipes

25/1/2002: All chickens tested negative for flaviviruses from the 21/1 bleed.

22/1/2002: Numbers were 'high' from both sites but well below average. Hanwood trapped 710 mosquitoes, with 386 Culex annulirostris and 252 Anopheles annulipes. Willbriggie collected 719, with 399 Culex annulirostris and 249 Anopheles annulipes.

16/1/2002: All chickens tested negative for flaviviruses from the 14/1 bleed.

15/1/2002: Numbers have increased dramatically this week, with the first 'very high' collection this season, being from Hanwood. From Hanwood, 1721 mosquitoes were trapped, with 1468 Anopheles annulipes. Willbriggie had a partial trap failure, with 104 mosquitoes, 86 being Culex annulirostris.

9/1/2002: All chickens tested negative for flaviviruses from the 2/1 and 7/1 bleeds.

8/1/2002: Mosquito numbers continue to be well below average. Hanwood trapped 293 mosquites ('high' numbers), with 156 Culex annulirostris, while Willbriggie had 'low' numbers.

4/1/2002: All chickens tested negative for flaviviruses from the 10/12 and 17/12 bleeds.

18/12/2001: 'High' numbers were again collected from both sites, but continue to be well below average.

11/12/2001: Both sites collected 'high' numbers but were well below average.

10/12/2001: All chickens tested negative for flaviviruses from the 19/11 bleed.

4/12/2001: Collections are still well below average but increasing and now 'medium' (82 mosquitoes from Hanwood) to 'high' (172 from Willbriggie). Culex annulirostris numbers have increased and now dominating the collections.

28/11/2001: Mosquito collections were 'low' to 'medium' in number and well below average.

27/11/2001: All chickens tested negative for flaviviruses from the 19/11 bleed.

20/11/2001: Numbers were 'low' with the unseasonally cool weather patterns.

16/11/2001: All chickens tested negative for flaviviruses.

13/11/2001: Numbers are 'low' and below average from both sites.

6/11/2001: Numbers are slightly below average for the first collection this season. Willbriggie had the largest numbers with a 'high' collection of 122 mosquitoes and 28 were Culex annulirostris.

5/11/2001: All chickens from the initial bleed were seronegative for flaviviruses.

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