id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-325454-svc2xeh1	Kow, Chia Siang	Vitamin D Supplementation in Influenza and COVID-19 Infections Comment on: “Evidence that Vitamin D Supplementation Could Reduce Risk of Influenza and COVID-19 Infections and Deaths” Nutrients 2020, 12(4), 988	2020-06-01		.txt	text/plain	796	43	39	We read with interest the review article entitled "Evidence that Vitamin D supplementation could reduce risk of Influenza and COVID-19 infections and deaths" by Grant et al., recently published in Nutrients [1] . The authors have conveniently ignored the results of some key clinical studies evaluating the effectiveness of vitamin D supplementation in reducing the risk of developing respiratory tract infections (RTIs). A meta-analysis of 15 randomized controlled trials investigating the effectiveness of vitamin D supplementation in reducing the risk of developing RTIs among healthy individuals found no significant risk reduction [2] . However, the authors did include results of an IPD-based meta-analysis (including of 25 randomized, double-blind, placebo-controlled trials) evaluating the effectiveness of supplementation with vitamin D3 or vitamin D2 with prespecified acute RTIs as an outcome. Effect of vitamin D3 supplementation on respiratory tract infections in healthy individuals: A systematic review and meta-analysis of randomized controlled trials	./cache/cord-325454-svc2xeh1.txt	./txt/cord-325454-svc2xeh1.txt