In this video Dad and I look at a paper in the British Medical Journal lead by Dr Sabin Hazan from Ventura Clinical Trials (https://www.venturaclinicaltrials.com/)
The paper shows links between the increase of Bifidobacterium Lactis and the reduction of Covid severity in a paper titled "Lost microbes of COVID-19: Bifidobacterium, Faecalibacterium depletion and decreased microbiome diversity associated with SARS-CoV-2 infection severity"
You can also see the full paper here at: https://bmjopengastro.bmj.com/content/9/1/e000871
Stay healthy - Jonathan