Interesting that the Astra Zeneca trial was paused due to transverse myelitis. There have been several recorded cases of this occurring with Covid-19 - https://casereports.bmj.com/content/13/8/e236720

This can sometimes be attributed to B12 deficiency. https://pubmed.ncbi.nlm.nih.gov/11965427/ and I note this very interesting article - https://www.nutraingredients-asia.co...older-patients

Obviously more studies needed... but as the study stated ( https://www.nutraingredients-asia.co...aign=copyright) there were no adverse side effects to the supplementation....