AKHTAR, Zubair, Matthias GOTBERG, David ERLINGE, Evald H CHRISTIANSEN, Keith G OLDROYD, Zuzana MOTOVSKA, Andrejs ERGLIS, Ota HLINOMAZ, Lars JAKOBSEN, Thomas ENGSTROM, Lisette O JENSEN, Christian O FALLESEN, Svend E JENSEN, Oskar ANGERAS, Fredrik CALAIS, Amra KAREGREN, Jorg LAUERMANN, Arash MOKHTARI, Johan NILSSON, Jonas PERSSON, Abu K M M ISLAM, Afzalur RAHMAN, Fazila MALIK, Sohel CHOUDHURY, Timothy COLLIER, Stuart J POCOCK, John PERNOW, Chandini R MACINTYRE and Ole FROBERT. Optimal timing of influenza vaccination among patients with acute myocardial infarction - Findings from the IAMI trial. Vaccine. Oxford: ELSEVIER SCI LTD, 2023, vol. 41, No 48, p. 7159-7165. ISSN 0264-410X. Available from: https://dx.doi.org/10.1016/j.vaccine.2023.10.028.
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Basic information
Original name Optimal timing of influenza vaccination among patients with acute myocardial infarction - Findings from the IAMI trial
Authors AKHTAR, Zubair, Matthias GOTBERG, David ERLINGE, Evald H CHRISTIANSEN, Keith G OLDROYD, Zuzana MOTOVSKA, Andrejs ERGLIS, Ota HLINOMAZ (203 Czech Republic, belonging to the institution), Lars JAKOBSEN, Thomas ENGSTROM, Lisette O JENSEN, Christian O FALLESEN, Svend E JENSEN, Oskar ANGERAS, Fredrik CALAIS, Amra KAREGREN, Jorg LAUERMANN, Arash MOKHTARI, Johan NILSSON, Jonas PERSSON, Abu K M M ISLAM, Afzalur RAHMAN, Fazila MALIK, Sohel CHOUDHURY, Timothy COLLIER, Stuart J POCOCK, John PERNOW, Chandini R MACINTYRE and Ole FROBERT.
Edition Vaccine, Oxford, ELSEVIER SCI LTD, 2023, 0264-410X.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 30201 Cardiac and Cardiovascular systems
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 5.500 in 2022
RIV identification code RIV/00216224:14110/23:00133729
Organization unit Faculty of Medicine
Doi http://dx.doi.org/10.1016/j.vaccine.2023.10.028
UT WoS 001120169600001
Keywords in English Influenza vaccination; Optimal timing; Vaccine effectiveness; Percutaneous coronary intervention; Myocardial infarction
Tags 14110132, rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Tereza Miškechová, učo 341652. Changed: 6/3/2024 08:19.
Abstract
Influenza vaccination reduces the risk of adverse cardiovascular events. The IAMI trial randomly assigned 2571 patients with acute myocardial infarction (AMI) to receive influenza vaccine or saline placebo during their index hospital admission. It was conducted at 30 centers in 8 countries from October 1, 2016 to March 1, 2020. In this post-hoc exploratory sub-study, we compare the trial outcomes in patients receiving early season vaccination (n = 1188) and late season vaccination (n = 1344). The primary endpoint was the composite of all-cause death, myocardial infarction (MI), or stent thrombosis at 12 months. The cumulative incidence of the primary and key secondary endpoints by randomized treatment and early or late vaccination was estimated using the Kaplan-Meier method. In the early vaccinated group, the primary composite endpoint occurred in 36 participants (6.0%) assigned to influenza vaccine and 49 (8.4%) assigned to placebo (HR 0.69; 95% CI 0.45 to 1.07), compared to 31 participants (4.7%) assigned to influenza vaccine and 42 (6.2%) assigned to placebo (HR 0.74; 95% CI 0.47 to 1.18) in the late vaccinated group (P = 0.848 for interaction on HR scale at 1 year). We observed similar estimates for the key secondary endpoints of all-cause death and CV death. There was no statistically significant difference in vaccine effectiveness against adverse cardiovascular events by timing of vaccination. The effect of vaccination on all-cause death at one year was more pronounced in the group receiving early vaccination (HR 0.50; 95% CI, 0.29 to 0.86) compared late vaccination group (HR 0.75; 35% CI, 0.40 to 1.40) but there was no statistically significant difference between these groups (Interaction P = 0.335). In conclusion, there is insufficient evidence from the trial to establish whether there is a difference in efficacy between early and late vaccination but regardless of vaccination timing we strongly recommend influenza vaccination in all patients with cardiovascular diseases.
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