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Low serum 25-hydroxyvitamin D level and risk of upper respiratory tract infection in children and adolescents.
Clin Infect Dis. 2013 Aug; 57(3):392-7.CI

Abstract

BACKGROUND

Vitamin D may be important for immune function. Studies to date have shown an inconsistent association between vitamin D and infection with respiratory viruses. The purpose of this study was to determine if serum 25-hydroxyvitamin D (25(OH)D) was associated with laboratory-confirmed viral respiratory tract infections (RTIs) in children.

METHODS

Serum 25(OH)D levels were measured at baseline and children from Canadian Hutterite communities were followed prospectively during the respiratory virus season. Nasopharyngeal specimens were obtained if symptoms developed and infections were confirmed using polymerase chain reaction. The association between serum 25(OH)D and time to laboratory-confirmed viral RTI was evaluated using a Cox proportional hazards model.

RESULTS

Seven hundred forty-three children aged 3-15 years were followed between 22 December 2008 and 23 June 2009. The median serum 25(OH)D level was 62.0 nmol/L (interquartile range, 51.0-74.0). A total of 229 participants (31%) developed at least 1 laboratory-confirmed viral RTI. Younger age and lower serum 25(OH)D levels were associated with increased risk of viral RTI. Serum 25(OH)D levels <75 nmol/L increased the risk of viral RTI by 50% (hazard ratio [HR], 1.51; 95% confidence interval [CI], 1.10-2.07, P = .011) and levels <50 nmol/L increased the risk by 70% (HR, 1.67; 95% CI, 1.16-2.40, P = .006).

CONCLUSIONS

Lower serum 25(OH)D levels were associated with increased risk of laboratory-confirmed viral RTI in children from Canadian Hutterite communities. Interventional studies evaluating the role of vitamin D supplementation to reduce the burden of viral RTIs are warranted.

Authors+Show Affiliations

Division of Infectious Diseases, The Hospital for Sick Children, Toronto, Canada.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23677871

Citation

Science, Michelle, et al. "Low Serum 25-hydroxyvitamin D Level and Risk of Upper Respiratory Tract Infection in Children and Adolescents." Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America, vol. 57, no. 3, 2013, pp. 392-7.
Science M, Maguire JL, Russell ML, et al. Low serum 25-hydroxyvitamin D level and risk of upper respiratory tract infection in children and adolescents. Clin Infect Dis. 2013;57(3):392-7.
Science, M., Maguire, J. L., Russell, M. L., Smieja, M., Walter, S. D., & Loeb, M. (2013). Low serum 25-hydroxyvitamin D level and risk of upper respiratory tract infection in children and adolescents. Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America, 57(3), 392-7. https://doi.org/10.1093/cid/cit289
Science M, et al. Low Serum 25-hydroxyvitamin D Level and Risk of Upper Respiratory Tract Infection in Children and Adolescents. Clin Infect Dis. 2013;57(3):392-7. PubMed PMID: 23677871.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Low serum 25-hydroxyvitamin D level and risk of upper respiratory tract infection in children and adolescents. AU - Science,Michelle, AU - Maguire,Jonathon L, AU - Russell,Margaret L, AU - Smieja,Marek, AU - Walter,Stephen D, AU - Loeb,Mark, Y1 - 2013/05/15/ PY - 2013/5/17/entrez PY - 2013/5/17/pubmed PY - 2014/1/22/medline KW - cold KW - serum 25-hydroxyvitamin D KW - upper respiratory tract infection KW - vitamin D SP - 392 EP - 7 JF - Clinical infectious diseases : an official publication of the Infectious Diseases Society of America JO - Clin Infect Dis VL - 57 IS - 3 N2 - BACKGROUND: Vitamin D may be important for immune function. Studies to date have shown an inconsistent association between vitamin D and infection with respiratory viruses. The purpose of this study was to determine if serum 25-hydroxyvitamin D (25(OH)D) was associated with laboratory-confirmed viral respiratory tract infections (RTIs) in children. METHODS: Serum 25(OH)D levels were measured at baseline and children from Canadian Hutterite communities were followed prospectively during the respiratory virus season. Nasopharyngeal specimens were obtained if symptoms developed and infections were confirmed using polymerase chain reaction. The association between serum 25(OH)D and time to laboratory-confirmed viral RTI was evaluated using a Cox proportional hazards model. RESULTS: Seven hundred forty-three children aged 3-15 years were followed between 22 December 2008 and 23 June 2009. The median serum 25(OH)D level was 62.0 nmol/L (interquartile range, 51.0-74.0). A total of 229 participants (31%) developed at least 1 laboratory-confirmed viral RTI. Younger age and lower serum 25(OH)D levels were associated with increased risk of viral RTI. Serum 25(OH)D levels <75 nmol/L increased the risk of viral RTI by 50% (hazard ratio [HR], 1.51; 95% confidence interval [CI], 1.10-2.07, P = .011) and levels <50 nmol/L increased the risk by 70% (HR, 1.67; 95% CI, 1.16-2.40, P = .006). CONCLUSIONS: Lower serum 25(OH)D levels were associated with increased risk of laboratory-confirmed viral RTI in children from Canadian Hutterite communities. Interventional studies evaluating the role of vitamin D supplementation to reduce the burden of viral RTIs are warranted. SN - 1537-6591 UR - https://www.unboundmedicine.com/medline/citation/23677871/Low_serum_25_hydroxyvitamin_D_level_and_risk_of_upper_respiratory_tract_infection_in_children_and_adolescents_ L2 - https://academic.oup.com/cid/article-lookup/doi/10.1093/cid/cit289 DB - PRIME DP - Unbound Medicine ER -