NSW Arbovirus Surveillance & Vector Monitoring Program
Deniliquin 2000-2001
Mosquito/Virus Results

Nearby Locations

Albury Leeton Griffith

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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".

30/5/2001: All chickens tested negative for flaviviruses.

22/5/2001: All chickens tested negative for flaviviruses.

15/5/2001: All chickens tested negative for flaviviruses.

8/5/2001: All chickens tested negative for flaviviruses.

30/4/2001: Numbers were 'low' from both sites. All chickens tested negative for flaviviruses.

23/4/2001: Numbers were 'low' from both sites. All chickens tested negative for flaviviruses.

10/4/2001: Numbers were 'low' from both sites. All chickens tested negative for flaviviruses.

2/4/2001: Numbers were 'low' from both sites. All chickens tested negative for flaviviruses.

26/3/2001: Numbers continue to be below average and 'low' from both sites. All chickens tested negative for flaviviruses.

19/3/2001: Numbers were well again below average and 'low' from both sites. All chickens tested negative for flaviviruses.

13/3/2001: Numbers were well below average with the cold night and 'low' from both sites. All chickens tested negative for flaviviruses.

6/3/2001: Numbers were well below average and 'low' from the Island Sanctuary. The Racecourse trapped 'medium' numbers (55), with 38 Culex annulirostris. There was one seroconversion to Kunjin in the sentinel chicken flocks.

26/2/2001: Numbers remain stable and close to average. The Racourse collected 366 mosquitoes ('high' numbers), with 286 Culex annulirostris. Island Sanctuary trapped 'medium' numbers (84), with 72 Culex annulirostris. All chickens indicated tested negative for flaviviruses.

19/2/2001: Collections are below average this week, although 'high' from both sites. The Racecourse trapped 132 mosquitoes, with 117 Culex annulirostris. The Island Sanctuary collected 100, with 90 Culex annulirostris. All chickens tested negative for flaviviruses.

12/2/2001: Numbers overall are close to average, although quite variable between sites. The Racecourse had a 'high' collection of 525 mosquitoes, with 380 Culex annulirostris and 106 Anopheles annulipes, while the Island Sanctuary trapped 'low' numbers. All chickens tested negative for flaviviruses.

6/2/2001: Numbers are similar to the previous week, and 'high' from both sites, but are around double the average. The Racecourse trapped 789 mosquitoes, with 768 Culex annulirostris, while the Island Sanctuary trapped 237, with 231 Culex annulirostris. All chickens tested negative for flaviviruses.

21/1/2001: Mosquito numbers have crept up but overall, are slightly below average. The Racecourse had 'high' numbers (170), with 154 Culex annulirostris, while the Island Sanctuary had a 'very high' collection (1104), with 1064 Culex annulirostris. All chickens tested negative for flaviviruses.

16/1/2001: The hot, dry weather conditions have caused a dramatic decline in mosquito numbers, with 'low' numbers from the Racecourse. A 'high' collection (142) was made from the Island Sanctuary, with 139 Culex annulirostris. All chickens tested negative for flaviviruses.

9/1/2001: Numbers were way down with the cooler weather, but were still 'high' from both sites. The Racecourse trapped 536 mosquitoes, with 459 Culex annulirostris. The Island Sanctuary collected 857 mosquitoes, with 818 Culex annulirostris. All chickens tested negative for flaviviruses. 

2/1/2001: Numbers continue to rise into the new year, with 'very high' collections from both sites. The Racecourse trapped 2584 mosquitoes, with 2451 Culex annulirostris. The Island Sanctuary trapped a massive 7945 mosquitoes, with 7834 Culex annulirostris. All chickens tested negative for flaviviruses.

17/12/2000: Huge numbers this week, with 'very high' collections from both sites being around 2-3x the average. he Racecourse site collected a total of 2811 mosquitoes, with 2651 mosquitoes. The Island Sanctuary trapped 2376 mosquitoes, with 2202 Culex annulirostris. All chickens tested negative for flaviviruses. 

10/12/2000: Big collections continue. The Raceourse trap had similar numbers ('high' with 866 mosquitoes) to the previous week and Culex annulirostris (758) continues to dominate. The Island Sanctuary had 'very high' (1678) numbers again, with 1362 Culex annulirostris. All chickens tested negative for flaviviruses. 

3/12/2000: Overall numbers are still increasing. The collections at the Racecourse declined this week but are still 'high' (841) and above average. There was a dramatic increase at the Island Sanctuary with a 'very high' trap number (2241), including 2053 Culex annulirostris. All chickens tested negative for flaviviruses. 

26/11/2000: The Racecourse continues with 'very high' (1946) collections, with numbers over 5 times the average. Note that the Culex australicus (505) numbers are declining and there is a corresponding increase in Culex annulirostris (1328) numbers. The Island Sanctuary collection was 'high' (334) and around average, with 215 Culex annulirostris. All chickens tested negative for flaviviruses. 

20/11/2000: Mosquito numbers continue to climb from both sites, with the Racecourse site having a 'very high' (1920) collection, being over 13 times the average. Culex annulirostris (427) was the dominate species and its numbers were 4.5x the long term average. The Island Sanctuary numbers were 'high' (213), with 146 Culex annulirostris.

12/11/2000: Mosquito numbers were 'very high' (1173) from the Racecourse with Culex annulirostris numbers around 30 times greater than average. Island Sanctuary had 'medium' numbers (97), which are slightly higher than normal. All chickens tested negative for flaviviruses. 

7/11/2000: All chickens tested negative for flaviviruses. 

6/11/2000: Numbers of Culex annulirostris were 'low' from both sites, however the total number from the Racecourse (Site 1) of 399 is 'high' and well above average.

17/10/2000: All chickens tested negative for flavivirus from the initial bleed at Griffith.

 

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