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Volume 18, Number 11—November 2012

Research

Sources of Dengue Viruses Imported into Queensland, Australia, 2002–2010

David WarrilowComments to Author , Judith A. Northill, and Alyssa T. Pyke
Author affiliations: Queensland Health Forensic and Scientific Services, Archerfield, Queensland, Australia

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Table 4

Observed and expected numbers of imported DENVs by region, Queensland, Australia, 2002–2010*

Imported DENVs No. (%) from Asia† No. (%) from PNG No. (%) from Pacific Islands No. (%) from non–Asia-Pacific region
Observed 104 (77.0) 18 (13.3) 11 (8.1) 2 (1.5)
Expected‡ 92 (68.2) 11 (7.9) 28 (20.8) 4 (3.2)

2 is 18 (p<0.0004; 2-tailed test); DENVs, dengue viruses; PNG, Papua New Guinea.
†Asia includes travelers to Indonesia, Timor-Leste, Thailand, India, Malaysia, Philippines, Vietnam, Singapore, Cambodia, Sri Lanka and Laos; Papua New Guinea; Pacific Islands includes travelers to Fiji, Samoa, Solomon Islands, Tonga, and Vanuatu; non–Asia-Pacific region was defined as all cases outside the Asia-Pacific region which included Brazil and Guyana.
‡Based on travel data from the Australian Bureau of Statistics (www.abs.gov.au/) for departing Queensland residents who named the country where they planned to spend the most time, selected for those countries designated as having an ongoing dengue transmission risk, according to the Centers for Disease Control and Prevention Dengue Map (www.healthmap.org/dengue).

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