Trends in the Minimum Inhibitory Concentrations of Erythromycin, Clarithromycin, Azithromycin, Ciprofloxacin, and Trimethoprim/Sulfamethoxazole for Strains of Bordetella pertussis isolated in the Czech Republic in 1967-2015

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11120%2F17%3A43916147" target="_blank" >RIV/00216208:11120/17:43916147 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.21101/cejph.a4948" target="_blank" >http://dx.doi.org/10.21101/cejph.a4948</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21101/cejph.a4948" target="_blank" >10.21101/cejph.a4948</a>

Result language

angličtina

Original language name

Trends in the Minimum Inhibitory Concentrations of Erythromycin, Clarithromycin, Azithromycin, Ciprofloxacin, and Trimethoprim/Sulfamethoxazole for Strains of Bordetella pertussis isolated in the Czech Republic in 1967-2015

Original language description

OBJECTIVE: The aim of the study was to determine trends in the minimum inhibitory concentrations (MICs) of erythromycin used as first-line therapy and alternative antibiotics against Bordetella pertussis (B. pertussis) strains isolated from patients with whooping cough in the Czech Republic (CR) in three periods from 1967 to 2015. METHODS: In total, 135 isolates from the years 1967-2015 were analysed. The strains were divided into three groups by the year of isolation: 1967-1999 (42 strains), 2004-2010 (43 strains), and 2011-2015 (50 strains). MIC of selected antibiotics (erythromycin, clarithromycin, azithromycin, ciprofloxacin, and trimethoprim/sulfamethoxazole) were obtained by the reference agar dilution method on Bordet Gengou Agar with 15% defibrinated sheep blood. RESULTS: The study set included 70 strains previously tested for MICs of erythromycin and four other antibiotics. In the three study periods, the MICs of the tested antibiotics for B. pertussis were nearly identical. All but a single strain, inhibited by erythromycin at a concentration of 0.03 mg/l, were inhibited by two concentrations of erythromycin and azithromycin (0.06 and 0.125 mg/l). Clarithromycin inhibited the strains from all three study periods at the following concentrations: 0.03, 0.06, and 0.125 mg/l. Any of the 135 strains was inhibited by ciprofloxacin at a single concentration of 0.06 mg/l and by trimethoprim/sulfamethoxazole at three concentrations (0.125, 0.25, and 0.5 mg/l). CONCLUSION: The study set of 135 Czech strains of B. pertussis isolated in 1967-2015 appears to be homogeneous in terms of the MICs for five antimicrobials. The MICs remained in a narrow range of two to three low concentrations; the unimodal distribution of the MICs suggests the absence of resistance mechanisms. The highest MICs of erythromycin, clarithromycin, and azithromycin were equally 0.125 mg/l, that of ciprofloxacin was 0.06 mg/l, and that of trimethoprim/sulfamethoxazole was 0.5 mg/l. Over the study period of 55 years, the MICs of the study antibiotics remained in the same ranges.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30303 - Infectious Diseases

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Central European Journal of Public Health

ISSN

1210-7778

e-ISSN

—

Volume of the periodical

25

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

5

Pages from-to

282-286

UT code for WoS article

000423524300006

EID of the result in the Scopus database

2-s2.0-85041621855