» Articles » PMID: 20306323

Characterisation of Invasive Haemophilus Influenzae Isolates in Slovenia, 1993-2008

Overview
Publisher Springer
Date 2010 Mar 23
PMID 20306323
Citations 8
Authors
Affiliations
Soon will be listed here.
Abstract

The objectives of our study were to describe the epidemiology of invasive Haemophilus influenzae disease from 1993 to 2008 in Slovenia, a country with routine H. influenzae serotype b (Hib) conjugate vaccination since the year 2000. A total of 292 isolates of H. influenzae, recovered from a normally sterile site, were collected in the study period. The isolates were serotyped by slide agglutination and antibiotic susceptibility was determined. One hundred and eight isolates received after the year 2000 were serotyped by slide agglutination and by polymerase chain reaction (PCR) capsule typing, and both methods were compared. After the introduction of the routine Hib vaccination, the incidence of H. influenzae disease in children under the age of 5 years has decreased by 87.6% and type b was replaced by non-typeable H. influenzae as the predominant serotype. The proportion of serotype b decreased from 85.3% in the pre-vaccination period to 13.0% in the vaccination period and the proportion of non-capsulated isolates increased from 12.0 to 85.2%. The study of genetic relatedness by pulsed-field gel electrophoresis (PFGE) demonstrated that the isolates of serotypes b and f were genetically homogeneous within the serotype. The results of our national surveillance showed that the vaccine has been very efficient in preventing Hib invasive disease in Slovenia. Nevertheless, we see a need for further monitoring of invasive H. influenzae infections at a national level.

Citing Articles

Molecular diagnostics in cerebrospinal fluid for the diagnosis of central nervous system infections.

Olie S, Andersen C, van de Beek D, Brouwer M Clin Microbiol Rev. 2024; 37(4):e0002124.

PMID: 39404267 PMC: 11629637. DOI: 10.1128/cmr.00021-24.


Fatal Meningitis and Sepsis Caused by Nontypeable .

Klibanov O, Kehr H, Jeter Z, Ekwonu T J Med Cases. 2022; 13(8):396-401.

PMID: 36128063 PMC: 9451564. DOI: 10.14740/jmc3974.


Epidemiology of Invasive Haemophilus influenzae Disease, Europe, 2007-2014.

Whittaker R, Economopoulou A, Gomes Dias J, Bancroft E, Ramliden M, Pastore Celentano L Emerg Infect Dis. 2017; 23(3):396-404.

PMID: 28220749 PMC: 5382729. DOI: 10.3201/eid2303.161552.


Association of influenza with severe pneumonia/empyema in the community, hospital, and healthcare-associated setting.

Seki M, Fuke R, Oikawa N, Hariu M, Watanabe Y Respir Med Case Rep. 2016; 19:1-4.

PMID: 27330964 PMC: 4908279. DOI: 10.1016/j.rmcr.2016.05.005.


Invasive Disease Caused by Nontypeable Haemophilus influenzae.

Langereis J, de Jonge M Emerg Infect Dis. 2015; 21(10):1711-8.

PMID: 26407156 PMC: 4593434. DOI: 10.3201/eid2110.150004.


References
1.
Sarangi J, Cartwright K, Stuart J, Brookes S, Morris R, Slack M . Invasive Haemophilus influenzae disease in adults. Epidemiol Infect. 2000; 124(3):441-7. PMC: 2810930. DOI: 10.1017/s0950268899003611. View

2.
Heath P, Booy R, Azzopardi H, Slack M, Fogarty J, Moloney A . Non-type b Haemophilus influenzae disease: clinical and epidemiologic characteristics in the Haemophilus influenzae type b vaccine era. Pediatr Infect Dis J. 2001; 20(3):300-5. DOI: 10.1097/00006454-200103000-00016. View

3.
. Serotyping discrepancies in Haemophilus influenzae type b disease--United States, 1998-1999. MMWR Morb Mortal Wkly Rep. 2002; 51(32):706-7. View

4.
Campos J, Roman F, Perez-Vazquez M, Aracil B, Oteo J, Cercenado E . Antibiotic resistance and clinical significance of Haemophilus influenzae type f. J Antimicrob Chemother. 2003; 52(6):961-6. DOI: 10.1093/jac/dkh004. View

5.
Falla T, Crook D, Brophy L, Maskell D, Kroll J, Moxon E . PCR for capsular typing of Haemophilus influenzae. J Clin Microbiol. 1994; 32(10):2382-6. PMC: 264070. DOI: 10.1128/jcm.32.10.2382-2386.1994. View