FACT FOCUS: Trump falsely claims babies can be seen to change 'radically' after vaccination

In an excerpt of a recent conversation between former President Donald Trump and independent presidential candidate Robert F. Kennedy Jr. posted online, Trump suggested vaccines given to children to protect them from disease are harmful. He also exaggerated the number of vaccines given to children and he falsely claimed they lead to sudden, visible changes. Neither campaign has responded to requests for comment. Vaccines prevent an estimated 3.5 million to 5 million deaths every year. Childhood vaccines train youngsters’ bodies to recognize and fight off viruses and bacteria they haven’t yet been exposed to -- diseases that tend to be especially dangerous at young ages.