Study on Haemophilus influenzae type b: data from autopsy of community acquired pneumonia among children.
- Author:
Hui-li HU
1
;
Yi-yun HU
;
Le-jian HE
;
Sang-jie YU
;
Wei GAO
;
Yong-hong YANG
Author Information
- Publication Type:Journal Article
- MeSH: Age Factors; Autopsy; Blotting, Southern; Child, Preschool; Community-Acquired Infections; microbiology; pathology; Female; Haemophilus influenzae type b; genetics; physiology; Humans; Infant; Lung; microbiology; pathology; Male; Pneumonia; microbiology; pathology; Polymerase Chain Reaction
- From: Chinese Journal of Epidemiology 2005;26(8):604-607
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the status of Haemophilus influenza type b(Hib) on death cases of children from community-acquired pneumonia (CAP) and to estimate the value of direct in-situ polymerase chain reaction (ISPCR) on diagnosis of children CAP, pathogenically.
METHODSOrdinary PCR, Southern blot and direct ISPCR were applied and compared in detecting Hib in 100 paraffin-embedded lung tissues of autopsy children died of CAP.
RESULTSNo major difference on the detection rate of Hib between 50-60s and 80s-2002 was found. The detection rate of Hib by direct ISPCR was higher than the other two methods. By Southern blot, Hib was identified from 8 out of 100 samples (8%), including 4 out of 56 in 1950-60s (7.1%) and 4 out of 44 (9.1%) (chi2 = 0.084, P>0.05) in 1980s-2002. By ISPCR, Hib was identified from 17 out of 100 samples (17%), including 8 out of 56 in 1950-60s (14.3%) and 9 out of 44 (20.5%) with chi2 = 0.665, P > 0.05, in 1980s-2002. Positive cases diagnosed by both Southern blot and ISPCR were 7%.
CONCLUSIONHib was one of the main bacterial pathogens causing CAP and deaths among children. Direct ISPCR was prefertable to be used in pathogenic diagnosis on children pneumonia, in terms of its sensitivity, specificity and localization.
