Abstract Millions worldwide are living with long COVID. Since therapeutic research is ongoing, long COVID prevention is a pragmatic public health strategy. While prior analyses have shown the benefit of primary vaccination, the effect of booster vaccination on preventing long COVID caused by an Omicron infection has not been fully investigated. This systematic review identified 31 observational studies, among which 11 were deemed suitable for pairwise meta-analyses. Herein, the pooled risk of long COVID was 22–29% ( P <0.0001 and P <0.0001, respectively) lower for vaccinated (any vaccination) populations versus unvaccinated (10 studies); 19% ( P <0.0001) lower for primary course vaccination versus no vaccination (3 studies); 26% ( P <0.0001) lower for booster vaccination versus no vaccination (4 studies) and 23% ( P =0.0044) lower for booster vaccination versus primary course vaccination (3 studies). These findings indicate that booster vaccination can provide additional protection against long COVID; thereby, highlighting the importance of seasonal vaccination against new SARS-CoV-2 variants.
This editorial refers to ‘Worldwide trends in oral anticoagulant use in patients with atrial fibrillation from 2010 to 2018: a systematic review and meta-analysis’ by M. Grymonprez et al., doi: 10.1093/europace/euab303. The landscape of atrial fibrillation (AF) management has changed substantially over the last decade. Key milestones for stroke prevention have included the introduction of non-vitamin K antagonist (VKA) oral anticoagulants (NOACs), replacement of the CHADS2 stroke risk assessment with CHA2DS2-VASc, guideline updates to offer oral anticoagulants (OAC) to prevent AF-related stroke instead of antiplatelet therapy, and a preference to prescribe NOAC instead of VKA (Figure 1). These changes have increased the proportion of OAC eligible AF patients and have been the catalyst for the ‘transition era’, where we have moved away from a period dominated by VKA use for stroke prevention, to a new era of NOACs. In addition, adherence...