Cited by 20Pneumonia and Respiratory InfectionsRespiratory viral infections researchInfluenza Virus Research Studies

Co-colonization by Streptococcus pneumoniae and Staphylococcus aureus in the throat during acute respiratory illnesses

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DE LASTOURS, V., MALOSH, R., RAMADUGU, K., SRINIVASAN, U., DAWID, S., OHMIT, S., FOXMAN, B.·2016·Epidemiology and Infection

Abstract

Pneumonia due to either Streptococcus pneumoniae (Sp) or Staphylococcus aureus (Sa) accounts for most mortality after influenza and acute respiratory illness (ARI). Because carriage precedes infection, we estimated Sp and Sa carriage to examine the co-colonization dynamics between Sp, Sa and respiratory viruses in the presence of ARI in the oropharynx. We tested oropharyngeal specimens of community subjects (aged ⩾2 years) with ARI for the presence of influenza A and B, 11 other common respiratory viruses, Sp and Sa, using real-time PCR. A total of 338 participants reported 519 ARI episodes of which 119 (35%) carried Sp, 52 (13%) carried Sa and 25 (7%) carried both. Thirty-five subjects tested positive for influenza, of which 14 (40%) carried Sp and six (17%) carried Sa, significantly more than in the influenza-negative group (P = 0·03 and P = 0·04, respectively). In subjects infected by any virus compared to those with no virus, Sp carriage (39·2% vs. 27·9%, P = 0·03) but not Sa carriage (11·6% vs. 14%, P = 0·6) was more frequent. For children, when Sa was present, Sp carriage tended to be less frequent than expected given the presence of viral infection, but not significantly [observed relative risk 1·14, 95% confidence interval (CI) 0·4-3·1; with a relative excess risk due to interaction of -0·11]. Independent of age, Sp carriers were more likely to return that season with subsequent ARI (odds ratio 2·14, 95% CI 1·1-4·3, P = 0·03). Both Sp and Sa carriage rates in the oropharynx increase during influenza infection in children. However, no negative interaction between Sp and Sa was observed. Sp carriers are more likely to suffer subsequent ARI episodes than non-carriers.

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Research works printed but not linked: 2

  1. Hill PC, et al. Transmission of Streptococcus pneumo- niae in rural Gambian villages: a longitudinal study. Clinical Infectious Diseases 2010; 50: 1468-1476.
  2. Lewnard JA, et al. Epidemiological markers for interac- tions among Streptococcus pneumoniae, Haemophilus influenzae, and Staphylococcus aureus in upper respira- tory tract carriage. Journal of Infectious Diseases 2016; 213: 1596-1605.

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Authors
DE LASTOURS, V., MALOSH, R., RAMADUGU, K., SRINIVASAN, U., DAWID, S., OHMIT, S., & FOXMAN, B.
Affiliations
University of Michigan (US)
Venue
Epidemiology and Infection
Published
2016-08-18
Volume
144
Issue
16
Pages
3507-3519
ISSN
  • 0950-2688 (ISSN-L)
  • 1469-4409
OpenAlex
W2509551256
Cited by
20
References
46
Citations by year
2025: 1 · 2023: 4 · 2022: 2 · 2021: 3 · 2020: 4 · 2019: 2 · 2018: 3 · 2017: 1
FWCI
1.87
Type
journal article
Language
en
Open access
Locations
  • Epidemiology and Infection (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Pfizer
  • Philippe Foundation
  • Centers for Disease Control and Prevention (R01AI097150, U01IP000474)
  • National Institute of Allergy and Infectious Diseases (R01AI097150, AI097150)
Topics
  • Health Sciences › Medicine › Epidemiology › Pneumonia and Respiratory Infections
  • Health Sciences › Medicine › Epidemiology › Respiratory viral infections research
  • Health Sciences › Medicine › Epidemiology › Influenza Virus Research Studies
Keywords
Streptococcus pneumoniae, Staphylococcus aureus, co-colonization, acute respiratory illness, oropharyngeal carriage, influenza, respiratory viruses, children, pneumonia, viral-bacterial interactions

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