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The nasal epithelium is the primary point of contact for inhaled respiratory viruses such as rhinovirus, respiratory syncytial virus, influenza, and coronavirus, among others. In order to establish infection, these viruses must engage their respective receptors located on host epithelial cells and begin replication.
The COVID-19 pandemic drove the implementation of vaccine mandates to protect spaces and/or increase vaccine uptake, though their design, timing, and scope varied across jurisdictions. This study examines the associations of vaccine mandate announcements and removals with COVID-19 vaccine uptake in France, Italy, and California (USA).
Vaccine mandates were widely implemented against COVID-19, and a large and multidisciplinary literature has emerged as a result, covering fields such as epidemiology, economics, ethics, and law. We compiled an openly available repository of this literature, including 503 studies on COVID-19 vaccine mandates.
Global rates of invasive Group A Streptococcus (iGAS) disease surged from September 2022, exceeding pre-COVID-19 pandemic levels, showing atypical seasonality and disproportionately affecting children. We previously described the epidemiology of iGAS among Australian children from mid-2018 to end 2022 using data from the Paediatric Active Enhanced Diseases network and here provide updated clinical epidemiology for 2023 and 2024 to help inform public health strategies.
Influenza remains an important cause of pediatric morbidity and mortality. Immunisation is critical to prevent hospitalisation and severe disease. The COVID-19 pandemic had far-reaching effects on influenza epidemiology and vaccine use.
Post-acute sequelae of COVID-19 (PASC), or long COVID, are a public health concern. While most recover from SARS-CoV-2 infections within weeks, some experience persistent symptoms. Here, we quantified the association between repeated SARS-CoV-2 infections and the risk of hospital-diagnosed PASC.
Vaccination against SARS-CoV-2 was a crucial public health measure during the COVID-19 pandemic. Among the multiple strategies developed to increase vaccine uptake, governments often employed vaccine mandates. However, little evidence exists globally about the impact of these mandates and their subsequent removal on vaccine uptake, including in Australia, France, Italy and the USA.
Non-coercive 'nudge' interventions have shown the potential to promote health behaviours. This study aimed to evaluate the impact of nudge interventions on COVID-19/influenza vaccine uptake among children with medically at-risk conditions.
Influenza and COVID-19 vaccine uptake among pregnant women is sub-optimal. We assessed the effectiveness of a multi-component behavioural nudge intervention to improve COVID-19 and influenza vaccine uptake among pregnant women.
Following widespread exposure to Omicron variants, SARS-CoV-2 has transitioned to endemic circulation. Populations now have diverse infection and vaccination histories, resulting in heterogeneous immune landscapes. Careful consideration of the value of ongoing vaccination is required through the post-Omicron phase of COVID-19 management to minimise disease burden.