<P> Recommendations for IAP to prevent perinatal GBS disease were issued in 1996 by the CDC . In these guidelines , the use of one of two prevention methods was recommended , either a risk - based approach or a culture - based screening approach . The CDC issued updated guidelines in 2002 ; these guidelines recommended the universal culture - based screening of all pregnant women at 35 -- 37 weeks ' gestation to optimize the identification of women who must receive IAP . CDC also recommended that women with unknown GBS colonization status at the time of delivery be managed according to the presence of intrapartum risk factors . Because of this strategy , the US has seen a major reduction in the incidence of GBS - EOD . </P>
<P> Recommendations for IAP to prevent perinatal GBS disease were issued in 1996 by the CDC . In these guidelines , the use of one of two prevention methods was recommended , either a risk - based approach or a culture - based screening approach . The CDC issued updated guidelines in 2002 ; these guidelines recommended the universal culture - based screening of all pregnant women at 35 -- 37 weeks ' gestation to optimize the identification of women who must receive IAP . CDC also recommended that women with unknown GBS colonization status at the time of delivery be managed according to the presence of intrapartum risk factors . Because of this strategy , the US has seen a major reduction in the incidence of GBS - EOD . </P>
when did they start testing for strep b
when did they start testing for strep b
2002
2002