Nasal swab bacteriology by PCR during the first 24-months of life: A prospective birth cohort study
Background: Most respiratory bacterial carriage studies in children are based on cross-sectional samples or longitudinal studies with infrequent sampling points. The prospective Observational Research in Childhood Infectious Diseases birth cohort study intensively evaluated the community-based epide...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
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Wiley-Liss, Inc
2019
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| Online Access: | http://hdl.handle.net/20.500.11937/74156 |
| _version_ | 1848763195648376832 |
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| author | Palmu, A. Ware, R. Lambert, S. Sarna, Mohinder Bialasiewicz, S. Seib, K. Atack, J. Nissen, M. Grimwood, K. |
| author_facet | Palmu, A. Ware, R. Lambert, S. Sarna, Mohinder Bialasiewicz, S. Seib, K. Atack, J. Nissen, M. Grimwood, K. |
| author_sort | Palmu, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Background: Most respiratory bacterial carriage studies in children are based on cross-sectional samples or longitudinal studies with infrequent sampling points. The prospective Observational Research in Childhood Infectious Diseases birth cohort study intensively evaluated the community-based epidemiology of respiratory viruses and bacteria during the first 2-years of life. Here we report the bacteriologic findings. Methods: Pregnant women in Brisbane, Australia were recruited between September 2010 and October 2012, and their healthy newborn children were followed for the first 2-years of life. Parents kept a daily symptom diary for the study child, collected a weekly anterior nose swab and completed an illness burden diary when their child met pre-defined illness criteria. Specimens were tested for respiratory bacteria by real-time polymerase chain reaction (PCR) assays and those containing human genomic DNA, deemed as high-quality, were analyzed. Results: Altogether 8100 high-quality nasal swab specimens from 158 enrolled children were analyzed. Streptococcus pneumoniae, Moraxella catarrhalis, and Haemophilus influenzae were detected in 42.4%, 38.9%, and 14.8% of these samples, respectively. Concomitant detection of bacteria was common. In contrast, Bordetella pertussis, B. parapertussis, Mycoplasma pneumoniae, Chlamydia pneumoniae, and Simkania negevensis were rarely identified. The prevalence of the three major bacteria was higher with increasing age and in the winter and spring months. Siblings and childcare attendance were the other risk factors identified. Conclusions: We confirmed the feasibility of frequent nasal swabbing by parents for studying bacterial colonization. PCR detected the major respiratory tract bacteria with expected high frequencies, but atypical bacteria were found rarely in this cohort. |
| first_indexed | 2025-11-14T10:59:36Z |
| format | Journal Article |
| id | curtin-20.500.11937-74156 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:59:36Z |
| publishDate | 2019 |
| publisher | Wiley-Liss, Inc |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-741562019-07-15T02:56:54Z Nasal swab bacteriology by PCR during the first 24-months of life: A prospective birth cohort study Palmu, A. Ware, R. Lambert, S. Sarna, Mohinder Bialasiewicz, S. Seib, K. Atack, J. Nissen, M. Grimwood, K. Background: Most respiratory bacterial carriage studies in children are based on cross-sectional samples or longitudinal studies with infrequent sampling points. The prospective Observational Research in Childhood Infectious Diseases birth cohort study intensively evaluated the community-based epidemiology of respiratory viruses and bacteria during the first 2-years of life. Here we report the bacteriologic findings. Methods: Pregnant women in Brisbane, Australia were recruited between September 2010 and October 2012, and their healthy newborn children were followed for the first 2-years of life. Parents kept a daily symptom diary for the study child, collected a weekly anterior nose swab and completed an illness burden diary when their child met pre-defined illness criteria. Specimens were tested for respiratory bacteria by real-time polymerase chain reaction (PCR) assays and those containing human genomic DNA, deemed as high-quality, were analyzed. Results: Altogether 8100 high-quality nasal swab specimens from 158 enrolled children were analyzed. Streptococcus pneumoniae, Moraxella catarrhalis, and Haemophilus influenzae were detected in 42.4%, 38.9%, and 14.8% of these samples, respectively. Concomitant detection of bacteria was common. In contrast, Bordetella pertussis, B. parapertussis, Mycoplasma pneumoniae, Chlamydia pneumoniae, and Simkania negevensis were rarely identified. The prevalence of the three major bacteria was higher with increasing age and in the winter and spring months. Siblings and childcare attendance were the other risk factors identified. Conclusions: We confirmed the feasibility of frequent nasal swabbing by parents for studying bacterial colonization. PCR detected the major respiratory tract bacteria with expected high frequencies, but atypical bacteria were found rarely in this cohort. 2019 Journal Article http://hdl.handle.net/20.500.11937/74156 10.1002/ppul.24231 Wiley-Liss, Inc restricted |
| spellingShingle | Palmu, A. Ware, R. Lambert, S. Sarna, Mohinder Bialasiewicz, S. Seib, K. Atack, J. Nissen, M. Grimwood, K. Nasal swab bacteriology by PCR during the first 24-months of life: A prospective birth cohort study |
| title | Nasal swab bacteriology by PCR during the first 24-months of life: A prospective birth cohort study |
| title_full | Nasal swab bacteriology by PCR during the first 24-months of life: A prospective birth cohort study |
| title_fullStr | Nasal swab bacteriology by PCR during the first 24-months of life: A prospective birth cohort study |
| title_full_unstemmed | Nasal swab bacteriology by PCR during the first 24-months of life: A prospective birth cohort study |
| title_short | Nasal swab bacteriology by PCR during the first 24-months of life: A prospective birth cohort study |
| title_sort | nasal swab bacteriology by pcr during the first 24-months of life: a prospective birth cohort study |
| url | http://hdl.handle.net/20.500.11937/74156 |