1918 Pandemic influenza was most probably swine influenza spread by the Rockefeller Institute for Medical Research and its experimental bacterial meningococcal vaccine.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2118275/

https://academic.oup.com/aje/article/187/12/2498/5059949

https://www.historyofvaccines.org/content/antitoxin-production-united-states

https://www.lewrockwell.com/2020/03/no_author/did-a-vaccine-experiment-on-u-s-soldiers-cause-the-spanish-flu/

>>9031387

>I wonder if Dr. Gates had any relation to the Bill Gates family?

Could be…

But Dr. Frederick Lamont Gates was son of Frederick Taylor Gates the principal business and philanthropic advisor to the major oil industrialist John D. Rockefeller.

https://en.wikipedia.org/wiki/Frederick_Taylor_Gates

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2126288/pdf/449.pdf