Evolution of pneumococcal serotypes, vaccination uptake, and prognosis of invasive pneumococcal disease: A 9-year multicentre cohort study in Granada (Andalusia, Spain) - 14/02/26
, José Juan Jiménez-Moleón b, f, gHighlights |
• | Overall, 58.6% of patients with invasive pneumococcal disease (IPD) had no previous pneumococcal vaccination. |
• | Pneumococcal vaccination was indicated in > 90 % of patients with IPD. |
• | Vulnerability (living in long-term care facilities, dependency and older age) was strongly associated with higher mortality. |
• | Pneumococcal vaccination was associated with lower in-hospital mortality, despite IPD. |
• | Over 30% of patients had contracted IPD by a serotype not included in the pneumococcal vaccines currently used in Spain. |
Abstract |
Objective |
Our aim was to analyse the serotypes, vaccination and risk factors associated with in-hospital mortality in patients diagnosed with invasive pneumococcal disease (IPD) in two hospitals in Spain.
Methods |
A retrospective cohort study (2015–2024). Inclusion criteria were adults with IPD and with a serotyped sample registered in our microbiology services. Data were obtained through electronic medical records. The main exposure was pneumococcal vaccination, and the main outcome was in-hospital mortality. Bivariate, multivariable, and survival analyses were performed using R.
Results |
A total of 188 patients with IPD were included. The most frequent serotypes were 8, 3, 22F, 9 N and 11A. No previous pneumococcal vaccination was shown in 106 (58.6 %) patients. More than 30 % of serotypes were not included in the pneumococcal vaccines currently used in Spain. In-hospital mortality occurred in 27 (14.4 %) patients. Cox regression models showed older age (HR = 1.05, 95 %CI: 1.02–1.08), living in long-term care facilities (HR: 3.27, 95 %CI: 1.36–7.82), septic shock at admission (HR = 2.71; 95 %CI: 1.30–5.67), intensive care admission (HR = 2.64; 95 %CI: 1.53–4.57) and no previous pneumococcal vaccination (HR = 2.14; 95 %CI: 1.86–2.47) as the main factors associated with higher in-hospital mortality due to IPD.
Conclusions |
Low frequency of pneumococcal vaccination uptake in adult patients with IPD was demonstrated. Older age, living in long-term care facilities, dependency, septic shock at admission, and no previous pneumococcal vaccination were associated with higher in-hospital mortality. Immunization strategies should imperatively be optimised so as to reduce mortality from IPD.
Le texte complet de cet article est disponible en PDF.Keywords : Streptococcus pneumoniae , Pneumococcal disease, Pneumococcal vaccines, Hospital, Prognosis, Mortality
Plan
Vol 56 - N° 2
Article 105244- février 2026 Retour au numéro
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