[Evaluation of Seeplex Pneumobacter multiplex PCR kit for the detection of respiratory bacterial pathogens in pediatric patients].
BACKGROUND
Rapid identification of the causative agent among potential bacterial and viral pathogens is important for the management of acute respiratory disease. In this study, we evaluated the analytical performance and clinical usefulness of a recently-introduced multiplex PCR assay, Seeplex Pneumobacter detection kit (Seegene Inc., Korea) for the identification of respiratory bacterial pathogens.


METHODS
One hundred and eighty one nasopharyngeal aspirates were collected from pediatric patients with respiratory symptoms and analysed by multiplex PCR for the detection of Streptococcus pneumoniae (S.P), Haemophilus influenzae (H.I), Mycoplasma pneumoniae (M.P), Chlamydophila pneumoniae (C.P), Bordetella pertussis (B.P) and Legionella pneumophila (L.P). A comparison of multiplex PCR with conventional culture for the isolation of S.P and H.I was performed on 112 specimens. The cross reactivity of multiplex PCR was also evaluated.


RESULTS
Of 181 cases, 81 cases were positive by multiplex PCR (44.8%): 52 cases for S.P (28.7%), 47 cases for H.I (26.0%), 9 cases for M.P (5.0%), 3 cases for B.P (1.7%) and 1 case for C.P (0.6%) including multiple infection cases. The agreement rates between multiplex PCR and culture for S.P and H.I were 92.9% (kappa index=0.84, P<0.001) and 91.1% (kappa index=0.75, P<0.001), respectively. There was no cross reactivity with common bacterial and viral pathogens.


CONCLUSIONS
Seeplex Pneumobacter detection kit could be a useful screening tool for the rapid detection of respiratory bacterial pathogens. Further studies with lower respiratory tract specimens would be needed for the clinical evaluation of S. pneumoniae and H. influenzae detected by multiplex PCR.
Park
Joowon
J
Department of Laboratory Medicine, Dankook University Hospital, Cheonan, Korea. bjwon@hitel.net
Kim
Jae Kyoung
JK
Rheem
Insoo
I
Kim
Jongwan
J
D000293:Adolescent; D001424:Bacterial Infections / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D004269:DNA, Bacterial / Q000032:analysis; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009177:Mycoplasma pneumoniae / Q000302:isolation & purification*; D011019:Pneumonia, Mycoplasma / Q000175:diagnosis; D016133:Polymerase Chain Reaction; D011933:Reagent Kits, Diagnostic; D012141:Respiratory Tract Infections / Q000175:diagnosis* / Q000382:microbiology; D012680:Sensitivity and Specificity
D004269:DNA, Bacterial; D011933:Reagent Kits, Diagnostic