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Volume 23, Number 8—August 2017
Research

Characterization of Fitzroy River Virus and Serologic Evidence of Human and Animal Infection

Cheryl A. Johansen1Comments to Author , Simon H. Williams1, Lorna Melville, Jay Nicholson, Roy A. Hall, Helle Bielefeldt-Ohmann, Natalie A. Prow, Glenys R. Chidlow, Shani Wong, Rohini Sinha, David T. Williams, W. Ian Lipkin, and David W. Smith
Author affiliations: The University of Western Australia, Nedlands, Western Australia, Australia (C.A. Johansen, J. Nicholson, S. Wong, D.W. Smith); PathWest Laboratory Medicine Western Australia, Nedlands (C.A. Johansen, G.R. Chidlow, D.W. Smith); Columbia University, New York, New York, USA (S.H. Williams, R. Sinha, W.I. Lipkin); The Northern Territory Government, Darwin, Northern Territory, Australia (L.F. Melville); The University of Queensland, St. Lucia, Queensland, Australia (R.A. Hall, H. Bielefeldt-Ohmann, N.A. Prow); The University of Queensland, Gatton, Queensland, Australia (H. Bielefeldt-Ohmann); CSIRO Australian Animal Health Laboratory, Geelong, Victoria, Australia (D.T. Williams)

Main Article

Table 3

Mosquito species collected and arboviruses isolated from the Kimberley region of Western Australia, Australia, 2011 and 2012*

Year, location, mosquito species No. (%) collected No. processed No. pools processed No. virus isolates
2011
Fitzroy Crossing
Ae. (Ochlerotatus) normanensis 4,657 (38.4) 2,497 110 2 FRV, 3 non A/F
An. (Cellia) amictus 750 (6.2) 504 29 1 FRV, 4 non A/F
An. (Cellia) annulipes s.l. 2,879 (23.7) 1,898 84 6 non A/F
Cx. (Culex) annulirostris 3,202 (26.4) 1,773 79 2 MVEV, 1 KUNV, 1 KUNV+SINV, 6 non A/F
Other 635 (5.2) 482 100 1 non A/F†
Subtotal
 12,123 (100)
 7,154
 402
2012
Billiluna
Ae. (Macleaya) tremulus 252 (2.0) 135 14
Ae. (Ochlerotatus) normanensis 1,679 (13.4) 1,244 58 3 FRV
An. (Cellia) amictus 650 (5.2) 508 42
An. (Cellia) annulipes s.l. 3,456 (27.5) 1,555 74
An. (Cellia) novaguinensis 247 (2.0) 152 18
Cx. (Culex) annulirostris 5,608 (44.6) 3,424 148 2 MVEV
Damaged Anopheles spp. 131 (1.0) 83 14
Damaged Culex spp. 218 (1.7) 111 15
Other 326 (2.6) 199 84
Subtotal 12,567 (100) 7,411 467
Kununurra
Ae. (Finlaya) notoscriptus 455 (1.3) 381 31
Ae. (Neomellanoconion) lineatopennis 3,457 (9.9) 1540 80
Ae. (Ochlerotatus) normanensis 12,632 (36.2) 4917 219 7 FRV, 2 RRV
An. (Anopheles) bancroftii 2,428 (7.0) 723 52
An. (Cellia) annulipes s.l. 1,758 (5.0) 1025 67
An. (Cellia) meraukensis 2,717 (7.8) 863 60
Cq. (Coquillettidia) xanthogaster 931 (2.7) 796 55
Cx. (Culex) annulirostris 7,600 (21.8) 4195 193 1 RRV
Ve. (Verrallina) reesi 468 (1.3) 287 33
Damaged Culex spp. 350 (1.0) 253 30 1 RRV
Other 2,111 (6.0) 1528 369 4 RRV‡
Subtotal 34,907 (100) 16508 1189
Wyndham
Ae. (Ochlerotatus) normanensis 1,661 (5.4) 551 30 1 FRV, 1 RRV
An. (Anopheles) bancroftii 532 (1.7) 122 14
An. (Cellia) amictus 1,589 (5.1) 380 26
An. (Cellia) annulipes s.l. 982 (3.2) 262 20
An. (Cellia) meraukensis 1,677 (5.4) 450 27
Cx. (Culex) annulirostris 21,388 (69.1) 5,357 224 1 FRV, 2 KOKV, 4 RRV
Cx. (Culex) crinicauda 330 (1.1) 62 14
Damaged Culex spp. 907 (2.9) 247 17 1 RRV
Other 1,881 (6.1) 898 206 1 FRV, 1 RRV§
Subtotal
 30,947 (100)
 8329
 578
Total 90,544 39,402 2,636

*Only mosquito collection locations that yielded isolates of FRV are shown; species collected at abundance of <1.0% are grouped as “other”; named species are female mosquitoes only. Results from male mosquitoes are included in “other.” Ae., Aedes; An., Anopheles; Cq., Coquillettidia; Cx., Culex; FRV, Fitzroy River virus; KOKV, Kokobera virus; KUNV, West Nile (Kunjin) virus; non A/F, not an alphavirus or flavivirus and identity is yet to be determined, MVEV, Murray Valley encephalitis virus; RRV, Ross River virus; SINV, Sindbis virus; Ve., Verrallina.
†Isolated from female Ae. lineatopennis mosquito.
‡Isolated from female Aedeomyia catasticta (1), Anopheles amictus (1), and Mansonia uniformis (2) mosquitoes.
§FRV isolated from a pool of damaged female Aedes spp. mosquitoes, RRV isolated from female An. bancroftii mosquitoes.

Main Article

1These authors contributed equally to this article.

Page created: July 17, 2017
Page updated: July 17, 2017
Page reviewed: July 17, 2017
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