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Original ArticleOpen Access
Prevalence and Risk Factors of Streptococcus agalactiae (Group B) Colonization in Mothers and Neonatal Contamination at Srinagarind Hospital
Werawatakul Y 
,
Wilailuckana C ,
Taksaphan S ,
Thinkumrup J ,
Pragarasung M ,
Chouwajaroen P ,
Wachirapakom J ,
Kenprom M
,
Wilailuckana C ,
Taksaphan S ,
Thinkumrup J ,
Pragarasung M ,
Chouwajaroen P ,
Wachirapakom J ,
Kenprom M From July 1999 to November 1999, 901 pregnant women at Srinagarind Hospital, who
fulfilled the criteria and had signed consent forms, were cultured from the lower vagina and perineum
for group B streptococcus (GBS). Their neonates were also cultured from ears and anuses within
30 minutes after birth. There were 56 cases or 6.22 per cent colonization in pregnant mothers at the
onset of labor and 14 cases or 1.55 per cent colonization in their neonates. Risk factors for GBS
colonization in mothers were intrapartum fever and episiotomy. The risk factors for GBS coloni-
zation in the neonates were;
1.
husband's occupation, 2. antepartum fever, 3. intrapartum fever,
4. postpartum morbidity and 5. gestational age. No cases during the study period had clinical infec-
tion from GBS.
The prevalence rate in this study was much lower than the United States but similar to
many developing countries. At this moment, it is not possible to culture for GBS in all pregnant
women in Thailand. Intrapartum antibiotic prophylaxis for GBS infection was recommended if. 1.
maternal fever was more than
3sเธ—c.
2. ruptured membranes of more thanl8 hours and
3.
previous
birth with neonatal GBS infection.
Key word : Prevalence, Risk Factors, Streptococcus Agalactiae (Group B), GBS, Colonization,
Mothers, Neonatal Contamination, Srinagarind Hospital
fulfilled the criteria and had signed consent forms, were cultured from the lower vagina and perineum
for group B streptococcus (GBS). Their neonates were also cultured from ears and anuses within
30 minutes after birth. There were 56 cases or 6.22 per cent colonization in pregnant mothers at the
onset of labor and 14 cases or 1.55 per cent colonization in their neonates. Risk factors for GBS
colonization in mothers were intrapartum fever and episiotomy. The risk factors for GBS coloni-
zation in the neonates were;
1.
husband's occupation, 2. antepartum fever, 3. intrapartum fever,
4. postpartum morbidity and 5. gestational age. No cases during the study period had clinical infec-
tion from GBS.
The prevalence rate in this study was much lower than the United States but similar to
many developing countries. At this moment, it is not possible to culture for GBS in all pregnant
women in Thailand. Intrapartum antibiotic prophylaxis for GBS infection was recommended if. 1.
maternal fever was more than
3sเธ—c.
2. ruptured membranes of more thanl8 hours and
3.
previous
birth with neonatal GBS infection.
Key word : Prevalence, Risk Factors, Streptococcus Agalactiae (Group B), GBS, Colonization,
Mothers, Neonatal Contamination, Srinagarind Hospital
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