Factors associated with pneumococcal carriage and density in infants and young children in Laos PDR
Autoři:
Eileen M. Dunne aff001; Molina Choummanivong aff003; Eleanor F. G. Neal aff001; Kathryn Stanhope aff001; Cattram D. Nguyen aff001; Anonh Xeuatvongsa aff004; Catherine Satzke aff001; Vanphanom Sychareun aff003; Fiona M. Russell aff001
Působiště autorů:
Infection and Immunity, Murdoch Children’s Research Institute, Parkville, Victoria, Australia
aff001; Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
aff002; University of Health Sciences, Vientiane, Lao People’s Democratic Republic
aff003; Ministry of Health, Vientiane, Lao People's Democratic Republic
aff004; Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, Australia
aff005
Vyšlo v časopise:
PLoS ONE 14(10)
Kategorie:
Research Article
prolekare.web.journal.doi_sk:
https://doi.org/10.1371/journal.pone.0224392
Souhrn
Nasopharyngeal carriage of Streptococcus pneumoniae (the pneumococcus) is a precursor to pneumococcal disease. Several host and environmental factors have been associated with pneumococcal carriage, however few studies have examined the relationship between host factors and pneumococcal carriage density. We sought to identify risk factors for pneumococcal carriage and density using data from cross-sectional pneumococcal carriage surveys conducted in the Lao People's Democratic Republic before and after the introduction of the 13-valent pneumococcal conjugate vaccine (PCV13). Nasopharyngeal swabs were collected infants from aged 5–8 weeks old (n = 999) and children aged 12–23 months (n = 1,010), pneumococci detected by quantitative PCR, and a risk factor questionnaire completed. Logistic and linear regression models were used to evaluate associations between participant characteristics and pneumococcal carriage and density. In infants aged 5–8 weeks, living in a household with two or more children under the age of five years (aOR 1.97; 95% CI 1.39–2.79) and low family income (aOR 1.64; 95% CI 0.99–2.72) were positively associated with pneumococcal carriage. For children aged 12–23 months, upper respiratory tract infection (URTI) symptoms (aOR 2.64; 95% CI 1.97–3.53), two or more children under five in the household (aOR 2.40; 95% CI 1.80–3.20), and rural residence (aOR 1.84, 95% CI 1.35–2.50) were positively associated with pneumococcal carriage. PCV13 vaccination was negatively associated with carriage of PCV13 serotypes (aOR 0.60; 95% CI 0.44–0.83). URTI symptoms (p < 0.001), current breastfeeding (p = 0.005), rural residence (p = 0.012), and delivery by Caesarean section (p = 0.035) were associated with higher mean pneumococcal density in pneumococcal carriers (both age groups combined). This study provides new data on pneumococcal carriage and density in a high disease burden setting in southeast Asia.
Klíčová slova:
Antibiotics – Age groups – Smoking habits – Medical risk factors – Infants – Pneumococcus – Laos
Zdroje
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