10/26—Vitamin D levels predicted COVID-19 mortality rates (16 studies)
A Basic Review of the Preliminary Evidence That COVID-19 Risk and Severity Is Increased in Vitamin D Deficiency
A literature search was performed on PubMed, Google Scholar, and RSMLDS. Among the 47 original research studies summarized here, chart reviews found that serum vitamin D levels predicted COVID-19 mortality rates (16 studies) and linearly predicted COVID-19 illness severity (8 studies). COVID-19 was compared with dengue fever, for which oral vitamin D supplements of 4,000 IU for 10 days were significantly more effective than 1,000 IU in reducing virus replication and controlling the cytokine storm. Widely recommending 2,000 IU of vitamin D daily for all populations with limited ability to manufacture vitamin D from the sun has virtually no potential for harm and is reasonably likely to save many lives.
Is Vitamin D Deficiency a Risk Factor for Covid 19 in Children?
40 patients hospitalized with COVID-19 (via RT-PCR) had significantly lower vitamin D levels 13.14 μg/L (4.19–69.28) than did the 45 controls 34.81 (3.8–77.42) μg/L (p < .001). The symptom of fever was significantly higher in COVID‐ 19 patients who had deficient and insufficient vitamin D levels than in patients who had sufficient vitamin D levels (p = .038). There was a negative correlation found between fever symptom and vitamin D level (r = −0.358, p = .023).
Face mask use among individuals who are not medically diagnosed with COVID-19: A lack of evidence for and against and implications around early public health
A systematic review was conducted to identify studies that investigated the use of face masks to limit the spread of COVID-19 among healthy individuals. Cochrane Library, EMBASE, Google Scholar, PubMed, and Scopus were searched. No studies were found, demonstrating a lack of evidence for and against face mask use suggesting implications around early public health recommendations provided to healthy individuals.
Efficacy of cloth face mask in prevention of novel coronavirus infection transmission: A systematic review and meta-analysis
We searched MEDLINE, EMBASE, and Clinical Trials Register. Twelve studies were eligible to be included in review for data extraction and qualitative synthesis was carried out from extracted data. Cloth face masks show minimum efficacy in source control than the medical grade mask. The efficacy of cloth face masks filtration varies and depends on the type of material used, number of layers, and degree of moisture in mask and fitting of mask on face. Cloth face masks have limited efficacy in combating viral infection transmission.
Survival of SARS-CoV-2 and influenza virus on the human skin: Importance of hand hygiene in COVID-19
We evaluated the stability of SARS-CoV-2 and influenza A virus (IAV). SARS-CoV-2 and IAV were inactivated more rapidly on skin surfaces than on other surfaces (stainless steel/glass/plastic); the survival time was significantly longer for SARS-CoV-2 than for IAV [9.04 h (95% confidence interval: 7.96–10.2 h) vs. 1.82 h (1.65–2.00 h)]. Both SARS-CoV-2 and IAV in the mucus/medium on human skin were completely inactivated within 15 s by ethanol treatment. The 9-h survival of SARS-CoV-2 on human skin may increase the risk of contact transmission in comparison with IAV, thus accelerating the pandemic.
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