Cases nearly double in recent years, especially among men
                                
                                
                                    (Newser) -
                                    Syphilis cases are rising sharply in the US, especially among gay and bisexual men, reports the  CDC . The highest rates were among black men, but white and Hispanic men also saw noticeable increases, reports  Reuters . From 2005 to 2013, the number of syphilis cases nearly doubled from 8,724 to...