The article 'HIV Incidence' http://www.cdc.gov/hiv/topics/surveillance/incidence.htm said that 'New technology and methodology developed by CDC show that the incidence of HIV in the United States is higher than was previously known. ' Could you please have an explaination on this sentence ? Does that mean in the previous time ,the old technology ,say,ELISA (3rd or 4th generation's reagent)missed to catch some of the incidence of HIV ? And if it is true,what kind of the incidence had been missed ?
And what is the 'New technology and methodology developed by CDC ?
In my country,this article had been reported by the goverment to imply that maybe the old technology have missed to catch some of the infection of HIV.