We are all learning about the relationship between diet and infectious disease. The persons most at risk will have worst response to vaccine. The persons least at risk will have best response. Good to hear they are not excluding obese from trials. Hope they do not exclude elderly or those with pre existing conditions either.
https://m.youtube.com/watch?v=HCEkb858AaMDr McDougall recent interview with Chef AJ described drop in infectious disease in Norway, under plant based war time rations. This was in same period as Spanish Flu. Similar idea has been expressed by Dr Hana Kahleova of PCRM about at Adventist sanatoriums during Spanish Flu and Dr T Colin Campbell about viral antibodies and outcomes in lab and China Study.
Healthy persons (WFPB diet) have more effective immune response and better outcomes.
Sick persons (obese, chronic disease) have less effective immune response and worse outcomes.
Now I wish our public health experts would advise persons how to effectively lose weight. (Hint: Ask Dr McDougall how.)