References

Estimates of the global, regional, and national morbidity, mortality, and aetiologies of lower respiratory infections in 195 countries, 1990–2016: a systematic analysis for the Global Burden of Disease Study 2016

10.1016/s1473-3099(18)30310-4 · 2018 · External reference

Upper respiratory infections.

10.1016/j.pop.2013.06.004 · 2013 · External reference

Vitamin D and inflammatory diseases

2014 · External reference

Vitamin D and SARS-CoV-2 virus/COVID-19 disease

10.1136/bmjnph-2020-000089 · 2020 · External reference

Vitamin D increases the antiviral activity of bronchial epithelial cells in vitro

10.1016/j.antiviral.2016.11.004 · 2017 · External reference

Vitamin D modulation of innate immune responses to respiratory viral infections.

10.1002/rmv.1909 · 2017 · External reference

Vitamin D in the prevention of acute respiratory infection: systematic review of clinical studies

10.1016/j.jsbmb.2012.11.017 · 2013 · External reference

Acute Respiratory Tract Infection and 25-Hydroxyvitamin D Concentration: A Systematic Review and Meta-Analysis.

10.3390/ijerph16173020 · 2019 · External reference

Vitamin D, respiratory infections, and chronic disease: Review of meta-analyses and randomized clinical trials

10.1111/joim.13399 · 2022 · External reference

Vitamin D supplementation to prevent acute respiratory infections: a systematic review and meta-analysis of aggregate data from randomised controlled trials

10.1016/s2213-8587(21)00051-6 · 2021 · External reference

Vitamin D supplementation to prevent acute respiratory tract infections: Systematic review and meta-analysis of individual participant data

2017 · External reference

Efficacy of Vitamin D Supplements in Prevention of Acute Respiratory Infection: A Meta-Analysis for Randomized Controlled Trials.

10.3390/nu14040818 · 2022 · External reference

High-dose oral vitamin D supplementation for prevention of infections in children aged 0 to 59 months: a systematic review and meta-analysis.

10.1093/nutrit/nuad082 · 2023 · External reference

A meta-analysis of the association between vitamin D supplementation and the risk of acute respiratory tract infection in the healthy pediatric group.

2023 · External reference

Unresolved reference

2015 · External reference

Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement

10.1136/bmj.b2535 · 2009 · External reference

RoB 2: a revised tool for assessing risk of bias in randomised trials

10.1136/bmj.l4898 · 2019 · External reference

GRADE: an emerging consensus on rating quality of evidence and strength of recommendations

10.1136/bmj.39489.470347.ad · 2008 · External reference

Meta-analysis in clinical trials.

10.1016/0197-2456(86)90046-2 · 1986 · External reference

The heterogeneity statistic I(2) can be biased in small meta-analyses.

10.1186/s12874-015-0024-z · 2015 · External reference

The effect of vitamin D supplementation on acute respiratory tract infection in older Australian adults: an analysis of data from the D-Health Trial

10.1016/s2213-8587(20)30380-6 · 2021 · External reference

High-Dose Monthly Vitamin D for Prevention of Acute Respiratory Infection in Older Long-Term Care Residents: A Randomized Clinical Trial

10.1111/jgs.14679 · 2017 · External reference

Effect of monthly high-dose Vitamin D supplementation on acute respiratory infections in older adults: A randomized controlled trial

10.1093/cid/ciz801 · 2020 · External reference

Vitamin D and Acute Respiratory Infections-The PODA Trial.

10.1093/ofid/ofz228 · 2019 · External reference

Double-blind randomised controlled trial of vitamin D3 supplementation for the prevention of acute respiratory infection in older adults.

10.1136/thoraxjnl-2015-206996 · 2015 · External reference

Effect of Vitamin D Supplementation, Omega-3 Fatty Acid Supplementation, or a Strength-Training Exercise Program on Clinical Outcomes in Older Adults: The DO-HEALTH Randomized Clinical Trial.

10.1001/jama.2020.16909 · 2020 · External reference

High-dose oral vitamin d supplementation and mortality in people aged 65–84 years: The vidal cluster feasibility rct of open versus double-blind individual randomisation.

10.3310/hta24100 · 2020 · External reference

Effect of vitamin D supplementation on antibiotic use: A randomized controlled trial

10.3945/ajcn.113.063271 · 2014 · External reference

Vitamin D3 supplementation in patients with chronic obstructive pulmonary disease (ViDiCO): A multicentre, double-blind, randomised controlled trial.

10.1016/s2213-2600(14)70255-3 · 2015 · External reference

High doses of vitamin D to reduce exacerbations in chronic obstructive pulmonary disease: a randomized trial

10.7326/0003-4819-156-2-201201170-00004 · 2012 · External reference

Vitamin D supplementation and hospitalization for infection in older adults: A post-hoc analysis of data from the Australian D-Health Trial

10.1016/j.ajcnut.2022.11.015 · 2023 · External reference

Effect of daily vitamin D supplementation on risk of upper respiratory infection in older adults: A randomized controlled trial

2023 · External reference

Vitamin D3 supplementation and upper respiratory tract infections in a randomized, controlled trial

10.1093/cid/cit549 · 2013 · External reference

Vitamin D and respiratory health in the Busselton Healthy Ageing Study.

10.1111/resp.13239 · 2018 · External reference

Vitamin D status and acute respiratory infection: cross sectional results from the United States National Health and Nutrition Examination Survey, 2001–2006.

10.3390/nu7031933 · 2015 · External reference

Association between micronutrient deficiency and acute respiratory infections in healthy adults: a systematic review of observational studies.

10.1186/s12937-019-0507-6 · 2019 · External reference

Reduced Vitamin D Levels are Associated with Stroke-Associated Pneumonia in Patients with Acute Ischemic Stroke

10.2147/cia.s230255 · 2019 · External reference

Serum 25-hydroxyvitamin D levels in hospitalized adults with community-acquired pneumonia.

10.1111/crj.12792 · 2018 · External reference

Effect of vitamin D deficiency in Korean patients with acute respiratory distress syndrome

10.3904/kjim.2017.380 · 2018 · External reference

The role of vitamin D in the prevention of coronavirus disease 2019 infection and mortality.

10.1007/s40520-020-01570-8 · 2020 · External reference

Vitamin D supplementation to prevent acute respiratory infections: individual participant data meta-analysis.

10.3310/hta23020 · 2019 · External reference

Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis

10.1136/bmjgh-2020-003176 · 2021 · External reference

Vitamin D supplementation for preventing infections in children under five years of age.

2016 · External reference

Vitamin D supplementation for the prevention of childhood acute respiratory infections: A systematic review of randomised controlled trials

10.1017/s000711451500207x · 2015 · External reference

Therapeutic and maintenance regimens of vitamin D3 supplementation in healthy adults: A systematic review

10.14715/cmb/2018.64.14.2 · 2018 · External reference