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. 2020 Jul 22;39(12):2387–2396. doi: 10.1007/s10096-020-03992-8

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Isolation frequency of S. agalactiae (GBS) serotypes from 2015 to 2019. A total of 3494 GBS strains were isolated from vaginal swabs obtained by pregnant women at 37–39 weeks of gestation. Serotypes were identified by the agglutination test as described in the “Material and Methods” section. Histograms show the isolation frequency (percentage) of serotypes Ia, Ib, II, III, IV, and IV and not typable (NT) serotypes in the period between 2015 and 2019