By Jennifer RigbyNEW YORK (Reuters) -Philanthropist and Microsoft co-founder Bill Gates met once with U.S. Health Secretary Robert F. Kennedy Jr. since he took office, and the two “agreed to disagree” about vaccines, Gates told Reuters in an interview on Monday. Kennedy has long promoted doubts about vaccine safety and efficacy, and as health secretary, he has upended U.S. vaccine policy. The Gates Foundation is one of the biggest global health funders, and Gates is a prominent supporter of immunizations. “We agreed to disagree on some things about vaccines, but moved on to talk about areas that we would agree on,” said Gates. Gates said the U.S. funds important research in areas like maternal health and gestational diabetes.