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ArticleEuropean journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology2025

Managing penicillin resistant pneumococcal meningitis: an international id-iri study.

Hakan Erdem, Elif Dogan, Handan Ankarali, Gorana Dragovac, Derya Seyman, Arzu Tarakci, Enes Dalmanoglu, Ayse Kaya-Kalem, Ayse Batirel, Seniha Senbayrak and 38 more

Abstract readMulticenter Study
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Article in European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

48 authors.

Hakan ErdemDepartment of Infectious Diseases & Clinical Microbiology, Health Sciences University, Gülhane School of Medicine, Ankara, Türkiye. hakanerdem1969@yahoo.com.
Elif DoganDepartment of Infectious Diseases & Clinical Microbiology, Health Sciences University, Gülhane School of Medicine, Ankara, Türkiye.
Handan AnkaraliDepartment of Biostatistics and Medical Informatics, Istanbul Medeniyet University Faculty of Medicine, Istanbul, Türkiye.
Gorana DragovacUniversity of Novi Sad, Faculty of Medicine , Novi Sad, RS, Serbia.
Derya SeymanDepartment of Infectious Diseases and Clinical Microbiology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Türkiye.
Arzu TarakciDepartment of Infectious Diseases and Clinical Microbiology, University of Health Sciences, Konya City Hospital, Konya, Türkiye.
Enes DalmanogluDepartment of Infectious Diseases and Clinical Microbiology, Balıkesir University, Faculty of Medicine, Balıkesir, Türkiye.
Ayse Kaya-KalemDepartment of Infectious Diseases & Clinical Microbiology, Yildirim Beyazit University, Bilkent City Hospital, Ankara, Türkiye.
Ayse BatirelDepartment of Infectious Diseases & Clinical Microbiology, Health Sciences University, Kartal Dr. Lutfi Kirdar City Hospital, Istanbul, Türkiye.
Seniha SenbayrakDepartment of Infectious Diseases & Clinical Microbiology, Health Sciences University, Haydarpasa Numune Training and Research Hospital, Istanbul, Türkiye.
Marija CvetanovskaClinic for Infectious Diseases, Skopje, North Macedonia.
Sumeyye KazanciogluDepartment of Infectious Diseases & Clinical Microbiology, Yildirim Beyazit University, Bilkent City Hospital, Ankara, Türkiye.
Abdullah Umut PekokDepartment of Infectious Diseases and Clinical Microbiology, Pendik Medical Park Hospital, Istanbul, Türkiye.
Bilal Ahmad RahimiDepartment of Infectious Diseases, Kandahar University Medical Faculty, Teaching Hospital, Kandahar, Afghanistan.
Mustafa UguzDepartment of Infectious Diseases and Clinical Microbiology, Mersin City Hospital, Mersin, Türkiye.
Selva Ala-SelekDepartment of Infectious Diseases & Clinical Microbiology, Bagcilar Training and Research Hospital, Istanbul, Türkiye.
Atahan CagatayDepartment of Infectious Diseases and Clinical Microbiology, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey.
Serap Demir-TekolDepartment of Infectious Diseases & Clinical Microbiology, Health Sciences University, Kartal Dr. Lutfi Kirdar City Hospital, Istanbul, Türkiye.
Halil KulDepartment of Neurosurgery, Ankara Yildirim Beyazit University, Ankara Bilkent City Hospita, Ankara, Türkiye.
Tuba KuruogluOndokuz Mayis University, Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Samsun, Türkiye.
Fatih TemocinOndokuz Mayis University, Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Samsun, Türkiye.
Sevil AlkanDepartment of Infectious Diseases and Clinical Microbiology, Onsekiz Mart University, School of Medicine, Canakkale, Türkiye.
Furkan Baris ArikanDepartment of Infectious Diseases and Clinical Microbiology, Ege University, School of Medicine, Izmir, Türkiye.
Turan AslanDepartment of Infectious Diseases and Clinical Microbiology, Bezmialem University, School of Medicine, Izmir, Türkiye.
Meltem TasbakanDepartment of Infectious Diseases and Clinical Microbiology, Ege University, School of Medicine, Izmir, Türkiye.
Serife Altun-DemircanDepartment of Infectious Diseases and Clinical Microbiology, Ankara Training & Research Hospital, Istanbul, Türkiye.
Tuba Damar-CakircaDepartment of Infectious Diseases and Clinical Microbiology, Sanliurfa Training and Research Hospita, Ankara, Türkiye.
Amani El-KholyDepartment of Clinical Pathology, Cairo University, Faculty of Medicine, Cairo, Egypt.
Hasip KahramanDepartment of Infectious Diseases and Clinical Microbiology, Osmangazi University, School of Medicine, Giza, Türkiye.
Yordan KalchevDepartment of Medical Microbiology and Immunology and Research Institute, St. George University Hospital , Plovdiv, Bulgaria.
Sholpan KulzhanovaDepartment of Infectious Diseases, Astana Medical University, Astana, Kazakhstan.
Anna LíškováFaculty Hospital Nitra, Clinical Microbiology Institute, St. Elisabeth University of Health Care and Social Work, Bratislava, Slovak Republic.
Serkan OncuDepartment of Infectious Diseases and Clinical Microbiology, Adnan Menderes University, School of Medicine, Aydin, Türkiye.
Mehmet ÖzdemirDepartment of Microbiology, Necmettin Erbakan University, School of Medicine, Konya, Türkiye.
Deniz ÖzerDepartment of Infectious Diseases and Clinical Microbiology , Celal Bayar University, School of Medicine, Manisa, Türkiye.
Nefise Öztoprak CuvalciDepartment of Infectious Diseases and Clinical Microbiology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Türkiye.
Tugce Simsek-BozokDepartment of Infectious Diseases and Clinical Microbiology, Mersin University, School of Medicine, Mersin, Türkiye.
Luca Mihaela CatalinaSt. Parascheva Clinical Hospital of Infectious Diseases, Iasi, Romania.
Egidia MiftodeSt. Parascheva Clinical Hospital of Infectious Diseases, Iasi, Romania.
Larisa MiftodeSt. Parascheva Clinical Hospital of Infectious Diseases, Iasi, Romania.
Marianna MurdjevaDepartment of Medical Microbiology and Immunology and Research Institute, St. George University Hospital , Plovdiv, Bulgaria.
Chizaram OnyeaghalaDepartment of Internal Medicine, University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria.
Bahar Busra SivrikayaDepartment of Infectious Dsieases and Clinical Microbiology, Samsun University, Training and Research Hospital, Samsun , Türkiye.
Selcen Ozer-KokkizilDepartment of Infectious Diseases and Clinical Microbiology, Manisa City Hospital, Manisa, Türkiye.
Aysun YalciDepartment of Infectious Diseases & Clinical Microbiology, Health Sciences University, Gülhane School of Medicine, Ankara, Türkiye.
Oktay YapiciDepartment of Infectious Diseases and Clinical Microbiology, Balıkesir University, Faculty of Medicine, Balıkesir, Türkiye.
Joanna ZajkowskaDepartment of Infectious Diseases and Neuroinfections, Medical University in Białystok, Białystok, Poland.
Teresa FascianaDepartment of Health Promotion, Maternal Childhood, Internal Medicine of Excellence G. D'Alessandro, University of Palermo, Palermo, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Penicillin-resistant pneumococcal meningitis (PRPM) is a challenging and fatal infection. We conducted a multicentre international retrospective study to evaluate the clinical features, outcomes, predictors of outcomes antimicrobial efficacy and drug susceptibility in patients with PRPM. The study, conducted through the "Infectious Diseases-International Research Initiative" across 33 centers in 11 countries, analyzed PRPM patients treated between 2019 and 2024 using univariate and multivariate analyses. A total of 138 patients were included. Of these, 83 (60.1%) were fully cured, 27 (19.6%) died, and 28 (20.3%) survived with sequelae. Mortality was associated with ICU admission (OR 14.886; p = 0.021), mechanical ventilation (OR 7.205; p = 0.049), and vasopressor use (OR 8.983; p = 0.025). Higher CSF leukocyte count (OR 0.854; p = 0.060) and blood leukocyte count (OR 0.283; p = 0.021) were linked to lower mortality risk. Patients who developed sequelae were more likely to require mechanical ventilation (OR 9.354; p = 0.001), experience recurrent meningitis (OR 5.562; p = 0.081), and have lower platelet counts (OR 0.001; p = 0.050), compared to those who fully recovered. Sequelae patients had higher GCS scores (OR 1.365; p = 0.014), more corticosteroid use (OR 5.301; p = 0.061), and less vasopressor use (OR 0.205; p = 0.019) compared to those who died. The antibiotic susceptibility profiles of the isolates in our PRSP cohort were: Ceftriaxone (75/134, 55.9%), meropenem (26/44, 59%), moxifloxacin (47/48, 97.9%). PRPM is a fatal disease in which mortality and sequelae occurring in two-fifths of cases. Severe illness markers such as ICU admission, mechanical ventilation, and vasopressor use, along with recurrent meningitis are linked to worse outcomes. Thrombocytopenia, low leukocyte counts, and lower GCS scores are indicators of poor prognosis, while corticosteroid therapy appears protective in PRPM. Therapeutic optimization is challenged by rising resistance and pharmacokinetic limitations, though moxifloxacin shows the highest susceptibility; further research is warranted.

Indexed as

Anti-Bacterial AgentsMeningitis, PneumococcalPenicillin ResistanceStreptococcus pneumoniaeAdultAgedFemaleHumansMaleMicrobial Sensitivity TestsMiddle AgedRetrospective StudiesTreatment OutcomeAnti-Bacterial AgentsMeningitisPenicillinPneumococciResistantStreptococcus pneumoniae

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