boys with no symptoms of urethritis, isolation rates include C. trachomatis (9 to 11%) and N. gonorrhoeae (2 to 3%).[ citation needed ] In 1996, WHO estimated that more than 1 million people were being infected daily. About 60% of these infections occur in young people <_25 _1999.br="_1999.br" world="world" throughout="throughout" occurred="occurred"