Differential Effects of Pandemic (H1N1) 2009 on Remote and Indigenous Groups, Northern Territory, Australia, 2009

Trauer, James McCracken; Laurie, Karen Louise; McDonnell, Joseph; Kelso, Anne; Markey, Peter Gregory

doi:10.3201/eid1709.101196

i

Differential Effects of Pandemic (H1N1) 2009 on Remote and Indigenous Groups, Northern Territory, Australia, 2009

Supporting Files Public Domain

Sep 2011
By Trauer, James McCracken ; Laurie, Karen Louise ; McDonnell, Joseph ; ...

File Language:

English

Details

Alternative Title:

Emerg Infect Dis
Personal Author:

Trauer, James McCracken ; Laurie, Karen Louise ; McDonnell, Joseph ; Kelso, Anne ; Markey, Peter Gregory
Description:

Pandemic (H1N1) 2009 influenza spread through the Northern Territory, Australia, during June-August 2009. We performed 2 cross-sectional serologic surveys on specimens from Northern Territory residents, with 445 specimens obtained prepandemic and 1,689 specimens postpandemic. Antibody titers were determined by hemagglutination inhibition against reference virus A/California/7/2009 on serum samples collected opportunistically from outpatients. All specimens had data for patients' gender, age, and address, with patients' indigenous status determined for 94.1%. Protective immunity (titer >40) was present in 7.6% (95% confidence interval [CI] 5.2%-10.1%) of prepandemic specimens and 19.5% (95% CI 17.6%-21.4%) of postpandemic specimens, giving a population-standardized attack rate of 14.9% (95% CI 11.0%-18.9%). Prepandemic proportion of immune persons was greater with increasing age but did not differ by other demographic characteristics. Postpandemic proportion of immune persons was greater in younger groups and around double in indigenous persons. Postpandemic proportion immune was geographically heterogeneous, particularly among remote-living and indigenous groups.
Subjects:

Adaptive Immunity Adolescent Adult Antibodies, Viral Child Cross-Sectional Studies Humans Incidence Influenza, Human Influenza A Virus, H1N1 Subtype Middle Aged Pandemics Regression Analysis Rural Population Young Adult
Source:

Emerg Infect Dis. 17(9):1615-1623.
Document Type:

Journal Article
Place as Subject:

Australia
Location:

Oceania
Volume:

17
Issue:

9
Collection(s):

Emerging Infectious Diseases
Main Document Checksum:

urn:sha256:2faf6ef00f2dfeaec91619aac82cc4fe222dacdfa8102323cb8b58a4944404ba
Download URL:

https://stacks.cdc.gov/view/cdc/23663/cdc_23663_DS1.pdf
File Type:

[PDF - 363.91 KB ]

File Language:

English

ON THIS PAGE

Details Supporting Files

CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.

As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.