We published the abovementioned article about probiotic mixture VSL#3 on October 6, 2021. Since the product was named VSL#3 in our purchasing process in early 2016, it is referred to as VSL#3 in our article. In addition, the product currently known as VSL#3 is not the same as De Simone
Formulation. De Simone Formulation is now available as Visbiome® in the United States and Vivomixx® in Europe. The authors would like to apologise for any inconvenience caused
Purpose: Many studies have discussed the effects of serum vitamin D deficiency in SARS-CoV-2 patients. This study aimed to investigate the relationship between SARS-CoV-2 infection severity and free vitamin D (FVD) and bioavailable vitamin D (BAVD) levels in children.
Methods: A prospective case-control study design was used. Participants were divided into three groups based on the World Health Organization (WHO) COVID-19 Clinical Progression Scale. Serum 25-hydroxyvitamin D (25OH vitamin D; ng/mL), albumin (g/L), and vitamin D binding protein (ng/mL) levels were evaluated to investigate the relationship between disease severity and FVD and BAVD levels.
Results: In total, 82 participants were included in the study. Of those, 24.4 % were uninfected (n = 20), 50% had a mild case of SARSS-CoV-2 (n = 41), and 25.6% had a moderate case (n = 21). There was a statistically significant difference in FVD and BAVD levels between the groups (p = 0.026). Median FVD (p = 0.007, Cohen’s d = 0.84) and BAVD (p = 0.007, Cohen’s d = 0.86) levels were significantly higher in the mild group compared to the moderate group. FVD and BAVD metabolites were moderately positively correlated with lymphocyte counts (FVD: r = 0.437, p < 0.001; BAVD: r = 0.439, p < 0.001).
Conclusion: This is the first study to demonstrate a relationship between SARS-CoV-2 symptom severity and FVD and BAVD levels. The relationship between FVD and BAVD levels and lymphocyte counts could play an important role in symptom severity and should be evaluated in further studies.
The study was registered with Clinical Trials (NCT05598957, 10/06/2022).
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