Be aware of "documentaries" that feed you with information out of its context. One of the interviews has been cut short and out of the context to say that Bill Gates has "invested" in health care. Go to https://www.corbettreport.com/meetgates/ and see the sources. The source of the interview (with Becky Quick) is here. Gates has fucking donated $10 billion, not "invested". What he means by "We feel there’s been over a 20-to-1 return" is "Helping young children live, get the right nutrition, contribute to their countries — that has a payback that goes beyond any typical financial return." The 20-to-1 return is for the developing countries, not him.

Bill Gates is not a saint. He certainly played a lot of dirty tricks to pull up Microsoft to where it is now. Though, saying he has invested in vaccines is total bullshit.