J
Jacobus M. Ossewaarde
Researcher at Erasmus University Rotterdam
Publications - 32
Citations - 1688
Jacobus M. Ossewaarde is an academic researcher from Erasmus University Rotterdam. The author has contributed to research in topics: Chlamydia trachomatis & Lymphogranuloma venereum. The author has an hindex of 21, co-authored 32 publications receiving 1616 citations.
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Journal ArticleDOI
Resurgence of Lymphogranuloma Venereum in Western Europe: An Outbreak of Chlamydia trachomatis Serovar L2 Proctitis in The Netherlands among Men Who Have Sex with Men
R F Nieuwenhuis,Jacobus M. Ossewaarde,Hannelore M Götz,Jan Dees,H. Bing Thio,Maarten Thomeer,Jan C. den Hollander,Martino Neumann,Willem I. van der Meijden +8 more
TL;DR: An outbreak of LGV proctitis among MSM in The Netherlands is revealed and it seems important to increase the awareness of possible LGV in MSM with symptomaticProctitis.
Journal ArticleDOI
Multi locus sequence typing of Chlamydiales: clonal groupings within the obligate intracellular bacteria Chlamydia trachomatis
Yvonne Pannekoek,Giovanna Morelli,Barica Kusecek,Servaas A. Morré,Jacobus M. Ossewaarde,Ankie A. J. Langerak,Arie van der Ende +6 more
TL;DR: A multi locus sequence typing (MLST) scheme to understand the population genetic structure and diversity of these species and to evaluate the association between genotype and disease shows that C. trachomatis and C. pneumoniae are highly uniform, which supports the taxonomy of the order of Chlamydiales.
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Molecular evidence for the existence of additional members of the order Chlamydiales.
TL;DR: Evidence is provided for the existence of several new members of the order Chlamydiales as well as a new lineage separating 'S. negevensis' and 'P. acanthamoebae' from the genus Chlamydia with the four known chlamydIAL species.
Journal ArticleDOI
Serotyping and Genotyping of Genital Chlamydia trachomatis Isolates Reveal Variants of Serovars Ba, G, and J as Confirmed by omp1 Nucleotide Sequence Analysis
Servaas A. Morré,Jacobus M. Ossewaarde,J. Lan,Gerard J. J. van Doornum,Jan M. M. Walboomers,D. M. Maclaren,Chris J.L.M. Meijer,Adriaan J. C. van den Brule +7 more
TL;DR: This study shows that the PCR-based genotyping of clinical C. trachomatis isolates by RFLP analysis ofomp1 has a higher discriminatory power and is more convenient than serotyping.
Journal Article
Lymphogranuloma Venereum Among Men Who Have Sex with Men --- Netherlands, 2003--2004
M J W van de Laar,Hannelore M Götz,Onno de Zwart,W I van der Meijden,Jacobus M. Ossewaarde,H.B. Thio,J. S. A. Fennema,M. Spaargaren,H J C de Vries,Stuart M. Berman,John R. Papp,Kimberly A. Workowski +11 more
TL;DR: Health-care providers should be vigilant for LGV, especially among MSM exposed to persons from Europe, and prepared to diagnose the disease and provide appropriate treatment to patients and their exposed sex partners.