id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-275068-yr076sl6	Ayoub, Fares	Football and COVID-19 risk: correlation is not causation	2020-09-03		.txt	text/plain	446	30	56	A recent 8 genome wide association analysis (GWAS) has implicated that blood group A patients had a higher risk 9 of severe COVID-19 compared to other blood types,[3] while other studies have found associations 10 between vitamin D levels/latitude, and Bacille de Calmette et Guérin (BCG) vaccine and mortality to 11 COVID-19. [4] Based on the results of these studies, shall we tell our blood group A patients to stay home 12 or tell everyone to take vitamin D or get vaccinated with BCG? [5] Low vitamin D levels have often been associated with a 16 higher risk of infections, but vitamin D supplementation has not been shown to prevent respiratory 17 1 impact journals during the pandemic, but it is important to remember that correlation does not equal 2 causation.	./cache/cord-275068-yr076sl6.txt	./txt/cord-275068-yr076sl6.txt