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- 2015/16 seasonal vaccine effectiveness against hospitalisation with influenza A(H1N1)pdm09 and B among elderly people in Europe: results from the I-MOVE+ projectPublication . Rondy, Marc; Larrauri, Amparo; Casado, Itziar; Alfonsi, Valeria; Pitigoi, Daniela; Launay, Odile; Syrjänen, Ritva K; Gefenaite, Giedre; Machado, Ausenda; Vučina, Vesna Višekruna; Horváth, Judith Krisztina; Paradowska-Stankiewicz, Iwona; Marbus, Sierk D; Gherasim, Alin; Díaz-González, Jorge Alberto; Rizzo, Caterina; Ivanciuc, Alina E; Galtier, Florence; Ikonen, Niina; Mickiene, Aukse; Gomez, Veronica; Kurečić Filipović, Sanja; Ferenczi, Annamária; Korcinska, Monika R; van Gageldonk-Lafeber, Rianne; I-MOVE+ hospital working group; Valenciano, MartaWe conducted a multicentre test-negative case-control study in 27 hospitals of 11 European countries to measure 2015/16 influenza vaccine effectiveness (IVE) against hospitalised influenza A(H1N1)pdm09 and B among people aged ≥ 65 years. Patients swabbed within 7 days after onset of symptoms compatible with severe acute respiratory infection were included. Information on demographics, vaccination and underlying conditions was collected. Using logistic regression, we measured IVE adjusted for potential confounders. We included 355 influenza A(H1N1)pdm09 cases, 110 influenza B cases, and 1,274 controls. Adjusted IVE against influenza A(H1N1)pdm09 was 42% (95% confidence interval (CI): 22 to 57). It was 59% (95% CI: 23 to 78), 48% (95% CI: 5 to 71), 43% (95% CI: 8 to 65) and 39% (95% CI: 7 to 60) in patients with diabetes mellitus, cancer, lung and heart disease, respectively. Adjusted IVE against influenza B was 52% (95% CI: 24 to 70). It was 62% (95% CI: 5 to 85), 60% (95% CI: 18 to 80) and 36% (95% CI: -23 to 67) in patients with diabetes mellitus, lung and heart disease, respectively. 2015/16 IVE estimates against hospitalised influenza in elderly people was moderate against influenza A(H1N1)pdm09 and B, including among those with diabetes mellitus, cancer, lung or heart diseases.
- COVID-19 Vaccine Effectiveness in Autumn and Winter 2022 to 2023 Among Older EuropeansPublication . Laniece Delaunay, Charlotte; Mazagatos, Clara; Martínez-Baz, Iván; Túri, Gergő; Goerlitz, Luise; Domegan, Lisa; Meijer, Adam; Rodrigues, Ana Paula; Sève, Noémie; Ilić, Maja; Latorre-Margalef, Neus; Lazar, Mihaela; Maurel, Marine; Melo, Aryse; Andreu Ivorra, Blanca; Casado, Itziar; Horváth, Judit Krisztina; Buda, Silke; Bennett, Charlene; de Lange, Marit; Guiomar, Raquel; Enouf, Vincent; Mlinarić, Ivan; Samuelsson Hagey, Tove; Dinu, Sorin; Rumayor, Mercedes; Castilla, Jesús; Oroszi, Beatrix; Dürrwald, Ralf; O’Donnell, Joan; Hooiveld, Mariëtte; Gómez, Verónica; Falchi, Alessandra; Kurečić Filipović, Sanja; Dillner, Lena; Popescu, Rodica; Bacci, Sabrina; Kaczmarek, Marlena; Kissling, Esther; Gallardo García, Virtudes; Perez Morilla, Esteban; Pedrosa Corral, Irene; García Vázquez, Miriam; Milagro-Beamonte, Ana; Fernandez Ibañez, Ana; Margolles Martins, Mario; Giménez Duran, Jaume; Sastre Palou, Bartolomé; López Causapé, Carla; Viloria Raymundo, Luis Javier; Vega Alonso, Tomás; Ordax Díez, Ana; Lozano Alonso, Jose Eugenio; Rojo Bello, Silvia; Mendioroz, Jacobo; Basile, Luca; Martínez Mateo, Ana Isabel; Ruiz de Porras, Carlota; Moya Garcés, Alba; Marcos, Mª Ángeles; López Maside, Aurora; Botella Quijal, Francesc; Miralles Espi, Maite; Andreu Salete, Cristina; García Rodríguez, María del Carmen; Linares, Juan Antonio; García Comas, Luis; Barranco, Mª Isabel; Chirlaque, María-Dolores; Moreno Docón, Antonio; Ramos Marín, Violeta; Castrillejo, Daniel; Gómez Anés, Atanasio; Larrauro, Amparo; Pérez-Gimeno, Gloria; Lozano Álvarez, Marcos; Vega, Lorena; Galindo, Silvia; Puma, Tania; Monge, Susana; Pozo, Francisco; Casas, Inmaculada; Sandonis, Virginia; Vázquez-Morón, Sonia; Echeverría, Aitziber; Trobajo-Sanmartín, Camino; García Cenoz, Manuel; Ezpeleta, Guillermo; Ezpeleta, Carmen; Navascués, Ana; Krisztalovics, Katalin; Mucsányiné Juhász, Krisztina; Kristóf, Katalin; Preuss, Ute; Wedde, Marianne; Biere, Barbara; Reiche, Janine; Oh, Djin-Ye; McKenna, Adele; Connell, Jeff; Joyce, Michael; Bagheri, Mariam; Bos, Sanne; van den Brink, Sharon; Dijkstra, Frederika; Eggink, Dirk; van Gageldonk-Lafeber, Rianne; Goderski, Gabriel; Herrebrugh, Chantal; Jenniskens, Liz; Reukers, Daphne; Sluimer, John; Sprong, Tara; Teirlinck, Anne; Veldhijzen, Nienke; van der Burgh, Ruben; Kager, Cathrien; Klinkhamer, Mayra; Knottnerus, Bart; Riethof, Marloes; van den Broek, Ruud; Wortel, Safira; Machado, Ausenda; Kislaya, Irina; Aniceto, Carlos; Gomes, Licínia; Verdasca, Nuno; Henriques, Camila; Dias, Daniela; Lança, Miguel; Blanchon, Thierry; Guerrisi, Caroline; Renard, Aubane; Launay, Titouan; Masse, Shirley; Chazelle, Marie; Ferenčak, Ivana; Kaić, Bernard; Višekruna Vučina, Vesna; Čusek Adamić, Katica; Kosanović Ličina, Mirjana Lana; Lakošeljac, Danijela; Mihin Huskić, Ivana; Nonković, Diana; Carnahan, Annasara; Hansson-Pihlainen, Eva; Arvesen, Elin; Nid, Nora; Hansen, Anna-Lena; Andersson, Emmi; Dillner, Lena; Jidovu, Adrian; Timnea, Olivia Carmen; Pascu, Cătălina; Oprea, Mihaela; Bistriceanu, Iulia; Ivanciuc, Alina; Mihai, Maria Elena; VEBIS Primary Care Vaccine Effectiveness GroupKey Points: - Question: What was the effectiveness of COVID-19 vaccines administered in autumn and winter 2022 to 2023 against symptomatic SARS-CoV-2 infection among people aged 60 years or older in Europe, and how did different exposed or reference groups affect effectiveness? - Findings: In this case-control study of 9308 primary care patients at 11 European sites, within 3 months of vaccination, all COVID-19 vaccine effectiveness (CVE) estimates were 29% to 39% against SARS-CoV-2 viruses and 44% to 52% against the XBB variants. All point estimates decreased by time after vaccination, with no vaccine protection after 6 months. - Meaning: Findings of this study suggest that COVID-19 vaccination campaigns should precede peaks in SARS-CoV-2 incidence and that effectiveness of new vaccines against emerging variants should be continually monitored using seasonal CVE approaches.
- Low 2016/17 season vaccine effectiveness against hospitalised influenza A(H3N2) among elderly: awareness warranted for 2017/18 seasonPublication . Rondy, Marc; Gherasim, Alin; Casado, Itziar; Launay, Odile; Rizzo, Caterina; Pitigoi, Daniela; Mickiene, Aukse; Marbus, Sierk D; Machado, Ausenda; Syrjänen, Ritva K; Pem-Novose, Iva; Horváth, Judith Krisztina; Larrauri, Amparo; Castilla, Jesús; Vanhems, Philippe; Alfonsi, Valeria; Ivanciuc, Alina E; Kuliese, Monika; van Gageldonk-Lafeber, Rianne; Gomez, Veronica; Ikonen, Niina; Lovric, Zvjezdana; Ferenczi, Annamária; Moren, Alain; I-MOVE+ hospital working groupIn a multicentre European hospital study we measured influenza vaccine effectiveness (IVE) against A(H3N2) in 2016/17. Adjusted IVE was 17% (95% confidence interval (CI): 1 to 31) overall; 25% (95% CI: 2 to 43) among 65-79-year-olds and 13% (95% CI: -15 to 30) among those ≥ 80 years. As the A(H3N2) vaccine component has not changed for 2017/18, physicians and public health experts should be aware that IVE could be low where A(H3N2) viruses predominate.
- Measuring the impact of influenza vaccination programmes among the elderly population in Spain, the Netherlands and Portugal, 2015-2018Publication . Mazagatos, Clara; Machado, Ausenda; Dijkstra, Frederika; Kissling, Esther; Larrauri, Amparo; Kislaya, Irina; van Gageldonk-Lafeber, Rianne; Gherasim, Alin; Nunes, Baltazar; McDonald, Scott; Rose, Angie; Valenciano, MartaMeasuring the number of influenza-associated events prevented by influenza vaccination among the elderly in the European Union would allow a better understanding of the overall impact of influenza vaccination programmes, particularly in seasons with low influenza vaccine effectiveness (IVE). This study measured the number of medically attended influenza-confirmed cases in primary care (MAICC) among those ≥65 years averted by influenza vaccination programmes in Spain (SP), the Netherlands (NL) and Portugal (PT), from 2015 to 2018.
- Vaccine effectiveness against influenza A in older adults and the effect of chronic conditions: results from the I-MOVE and VEBIS multicentre European hospital case-control studies, 2015/16-2023/24Publication . Rose, Angela Mary Catherine; Nicolay, Nathalie; Mazagatos, Clara; Martínez-Baz, Iván; Launay, Odile; De Mot, Laurane; Bella, Antonino; Lazar, Mihaela; Machado, Ausenda; Kuliešė, Monika; Abela, Stephen; Vučina, Vesna Višekruna; van Gageldonk-Lafeber, Rianne; Bino, Silvia; Dürrwald, Ralf; Paradowska-Stankiewicz, Iwona; Horváth, Judit Krisztina; Duffy, Róisín; Husa, Petr; McMenamin, Jim; Pozo, Francisco; Howard, Jennifer; Latorre-Millán, Miriam; Castilla, Jesús; Nguyen, Liem Binh Luong; Dauby, Nicolas; Riccardo, Flavia; Ivanciuc, Alina; Gomez, Verónica; Jančorienė, Ligita; Xuereb, Gerd; Petrović, Goranka; Marbus, Sierk; Vasili, Adela; Tolksdorf, Kristin; Bogusz, Joanna; Oroszi, Beatrix; Domegan, Lisa; Součková, Lenka; Marsh, Kimberley; Bacci, Sabrina; Kissling, Esther; I-MOVE & VEBIS Hospital Network teamsBackground: The Influenza - Monitoring Vaccine Effectiveness in Europe (I-MOVE/I-MOVE+) and Vaccine Effectiveness, Burden and Impact Studies (VEBIS) hospital networks have conducted seasonal multicentre, test-negative, case-control studies in Europe to measure influenza vaccine effectiveness (IVE) since 2015/16. We measured the effect of chronic conditions on VE of influenza A subtypes among older adults (≥ 65 years) using pooled-season data (2015/16-2023/24). Methods: Hospital teams swabbed patients with severe acute respiratory infection (SARI) within 7 days of symptom onset. Cases were RT-PCR positive for influenza A(H1N1)pdm09 or A(H3N2); controls negative for any influenza virus. We calculated overall pooled-season IVE against influenza A(H1N1)pdm09 and A(H3N2), adjusted for study site, sex, age and onset date; and stratified by number of and by each chronic condition (diabetes, heart disease, lung disease/asthma, immunosuppression, kidney disease, liver disease, cancer, obesity). We investigated interaction between vaccination and each condition. Results: We included 1805 A(H1N1)pdm09 cases with 16,329 controls; 2590 A(H3N2) cases with 14,920 controls, from 13 study sites (12 countries). Over all seasons, 63-67% cases and 70% controls had ≥ 2 chronic conditions. Against A(H1N1)pdm09, pooled-season IVE was 37% (95%CI: 29-44) overall; 49% (95%CI: 9-72), 30% (95%CI: 12-44) and 38% (95%CI: 29-46) in those with 0, 1, ≥ 2 chronic conditions. Most IVE point estimates were 34-45%, apart from immunosuppression (-7%), kidney disease (17%) and liver disease (54%), but 95% CIs overlapped. Significant interaction was observed for kidney disease (p = 0.02) and immunosuppression (p = 0.01). Against A(H3N2), pooled-season IVE was 17% (95%CI: 8-25) overall; 15% (95%CI: -26-42), 11% (95%CI: -8-27) and 18% (95%CI: 7-28) in those with 0, 1, ≥ 2 chronic conditions. Here, IVE point estimates ranged 13-25%, apart from immunosuppression (5%), kidney disease (6%) and liver disease (31%), although 95% CIs overlapped. There were no significant interactions. Conclusions: Pooled-season results suggest low-moderate VE against influenza A subtypes among older SARI patients; higher against A(H1N1)pdm09 than A(H3N2), with little evidence of chronic condition modifying effect, apart from kidney disease and immunosuppression. We stress the importance of developing improved influenza vaccines for specific populations, and encourage further research into the effect of chronic conditions on IVE in older adults.
- Vaccine effectiveness against symptomatic SARS-CoV-2 infection in adults aged 65 years and older in primary care: I-MOVE-COVID-19 project, Europe, December 2020 to May 2021Publication . Kissling, Esther; Hooiveld, Mariette; Sandonis Martín, Virginia; Martínez-Baz, Iván; William, Naoma; Vilcu, Ana-Maria; Mazagatos, Clara; Domegan, Lisa; de Lusignan, Simon; Meijer, Adam; Machado, Ausenda; Brytting, Mia; Casado, Itziar; Murray, Josephine-L.K.; Belhillil, Sylvie; Larrauri, Amparo; O’Donnell, Joan; Tsang, Ruby; de Lange, Marit; Rodrigues, Ana Paula; Riess, Maximilian; Castilla, Jesús; Hamilton, Mark; Falchi, Alessandra; Pozo, Francisco; Dunford, Linda; Cogdale, Jade; Jansen, Tessa; Guiomar, Raquel; Enkirch, Theresa; Burgui, Cristina; Sigerson, Debbie; Blanchon, Thierry; Martínez Ochoa, Eva María; Connell, Jeff; Ellis, Joanna; van Gageldonk-Lafeber, Rianne; Kislaya, Irina; Rose, Angela M.C.; Gomez, Verónica; Nunes, Baltazar; Roquette, Rita; Silva, Adriana; Melo, Aryse; Costa, Inês; Verdasca, Nuno; Conde, Patrícia; Valenciano, Marta; I-MOVE-COVID-19 primary care study teamThe I-MOVE-COVID-19 network collates epidemiological and clinical information on patients with coronavirus disease (COVID-19), including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virological characterisation in 11 European countries [1]. One component of I-MOVE-COVID-19 is the multicentre vaccine effectiveness (VE) study at primary care/outpatient level in nine European study sites in eight countries. We measured overall and product-specific COVID-19 VE against symptomatic SARS-CoV-2 infection among those aged 65 years and older. We also measured VE by time since vaccination.