More than 750 current and former employees of the US health department have published a letter rebuking Health Secretary Robert F Kennedy Jr, saying his "dangerous and deceitful statements" contributed to recent violence at the Centers for Disease Control and Prevention (CDC) headquarters. Officials say the man who fired hundreds of rounds at the CDC this month, killing a police officer, had expressed distrust in the Covid-19 vaccine. In their letter, the staff said the attack came as "...