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a water purifier and a food source and haven for the abundant wildlife at the reservoir? We think not. This option will be discussed later. 9.4.2 Arboviruses From 1983 to 1987, domestic chicken flocks were maintained as sentinels (Figure 9.3) and bled for the presence of antibodies to both alphaviruses (e.g. Ross River virus) and flaviviruses (e.g. Murray Valley encephalitis, Kunjin viruses). These data showed that alphavirus activity occurred annually but this infection was somewhat unpredictable and did not necessarily correlate with the zones of highest mosquito abundance closest to the reservoir. Flavivirus infection occurred far less frequently. From 1990–93, 51,497 adult female mosquitoes were processed for the presence of alphaviruses using enzyme immunosorbent assay and polymerase chain reaction methods (Kay et al. 1996; Oliveira et al. 1995). Ten isolates of Ross River, one of Barmah Forest and two of Sindbis virus strains were recovered from Aedes normanensis, Anopheles amictus and Culex annulirostris, which indicated that they were probably local vectors. All virus stains were recovered from mosquitoes collected during the wet seasons (February or March) of 1991 or, especially, 1992. Relative hazard was assessed for four Ross River dam localities: Big Bay (north); Antill Creek (north-east); Toonpan (east); and Ross River (south). These were compared with more
DOI link for a water purifier and a food source and haven for the abundant wildlife at the reservoir? We think not. This option will be discussed later. 9.4.2 Arboviruses From 1983 to 1987, domestic chicken flocks were maintained as sentinels (Figure 9.3) and bled for the presence of antibodies to both alphaviruses (e.g. Ross River virus) and flaviviruses (e.g. Murray Valley encephalitis, Kunjin viruses). These data showed that alphavirus activity occurred annually but this infection was somewhat unpredictable and did not necessarily correlate with the zones of highest mosquito abundance closest to the reservoir. Flavivirus infection occurred far less frequently. From 1990–93, 51,497 adult female mosquitoes were processed for the presence of alphaviruses using enzyme immunosorbent assay and polymerase chain reaction methods (Kay et al. 1996; Oliveira et al. 1995). Ten isolates of Ross River, one of Barmah Forest and two of Sindbis virus strains were recovered from Aedes normanensis, Anopheles amictus and Culex annulirostris, which indicated that they were probably local vectors. All virus stains were recovered from mosquitoes collected during the wet seasons (February or March) of 1991 or, especially, 1992. Relative hazard was assessed for four Ross River dam localities: Big Bay (north); Antill Creek (north-east); Toonpan (east); and Ross River (south). These were compared with more
a water purifier and a food source and haven for the abundant wildlife at the reservoir? We think not. This option will be discussed later. 9.4.2 Arboviruses From 1983 to 1987, domestic chicken flocks were maintained as sentinels (Figure 9.3) and bled for the presence of antibodies to both alphaviruses (e.g. Ross River virus) and flaviviruses (e.g. Murray Valley encephalitis, Kunjin viruses). These data showed that alphavirus activity occurred annually but this infection was somewhat unpredictable and did not necessarily correlate with the zones of highest mosquito abundance closest to the reservoir. Flavivirus infection occurred far less frequently. From 1990–93, 51,497 adult female mosquitoes were processed for the presence of alphaviruses using enzyme immunosorbent assay and polymerase chain reaction methods (Kay et al. 1996; Oliveira et al. 1995). Ten isolates of Ross River, one of Barmah Forest and two of Sindbis virus strains were recovered from Aedes normanensis, Anopheles amictus and Culex annulirostris, which indicated that they were probably local vectors. All virus stains were recovered from mosquitoes collected during the wet seasons (February or March) of 1991 or, especially, 1992. Relative hazard was assessed for four Ross River dam localities: Big Bay (north); Antill Creek (north-east); Toonpan (east); and Ross River (south). These were compared with more
ABSTRACT