Robert F Kennedy Jr has issued a stern warning to US public health agencies over Covid vaccines as the race for the White House begins to heat up. Kennedy Jr, 70, is running as an independent candidate in this year’s presidential election and took to social media to make the campaign promise – the latest pronouncement in a line of what critics have described as “anti-vaccine disinformation”. He said: “As President, I will clean up the cesspool of corruption at CDC and force the public health agencies to come clean about Covid vaccines. “I’ll hold responsible those who lied or concealed critica…