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The goal of this study is to assess the effectiveness of vitamin D in reducing laboratory-confirmed influenza and in reducing non-influenza viral respiratory tract infections. A cohort of children between the ages of 3 and 17 years from the Thanh Ha Commune, Thanh Liem District, Ha Nam Province, Vietnam will be randomized to either weekly vitamin D supplements or placebo. Participants who develop acute respiratory infection over a 12-month period, will be tested for influenza, the co-primary outcome, and other respiratory viruses, the other co-primary outcome, by RT-PCR.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| vitamin D supplements | Experimental | children and adolescents that are randomized to the intervention will receive 7 mls of D-drops (14,000U/week of vitamin D) for eight months |
|
| vitamin D placebo | Placebo Comparator | children and adolescents that are randomized to placebo will receive 7 mls of placebo drops for eight months |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| vitamin D supplements | Dietary Supplement | Participants will receive 7mls of D-drops (14,000U/week of vitamin D) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Laboratory-confirmed non-influenza infection | 12 months | |
| Laboratory-confirmed influenza infection | 12 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Mark Loeb, MD | McMaster University, Hamilton, ON, Canada | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| National Institute of Hygiene and Epidemiology | Hanoi | Vietnam |
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| ID | Term |
|---|---|
| D012141 | Respiratory Tract Infections |
| ID | Term |
|---|---|
| D007239 | Infections |
| D012140 | Respiratory Tract Diseases |
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| placebo | Dietary Supplement | 7mls of placebo drops per week for 8 months. |
|