Critically ill patients are at high risk of acquiring ventilator-associated pneumonia (VAP), which occurs in approximately 20% of mechanically ventilated patients. VAP results either from aspiration of pathogen-contaminated oropharyngeal secretions or contaminated biofilms that form on endotracheal tubes (ETTs) after intubation. VAP results in increased duration of mechanical ventilation, increased intensive care unit and hospital length of stay, increased risk of death and increased healthcare costs. Because of its impact on patient outcomes and the healthcare system, VAP is regarded as an important patient safety issue and there is an urgent need for better evidence on the efficacy of prevention strategies. Modified ETTs that reduce aspiration of oropharyngeal secretions with subglottic secretion drainage or reduce the occurrence of biofilm with a coating of ceragenins (CSAs) are available for clinical use in Canada. In this implementation study, we will evaluate the efficacy of these two types of Health Canada-licensed ETTs on the occurrence of VAP, and impact on patient-centred outcomes.

In this ongoing, pragmatic, prospective, longitudinal, interrupted time, cross-over implementation study, we will compare the efficacy of a CSA-coated ETT (CeraShield N8 Pharma) with an ETT with subglottic secretion drainage (Taper Guard, Covidien). The study periods consist of four alternating time periods of 11 or 12 weeks or a total of 23 weeks for each ETT. All patients intubated with the study ETT in each time period will be included in an intention-to-treat analysis. Outcomes will include VAP incidence, mortality and health services utilisation including antibiotic use and length of stay.

This study has been approved by the Health Sciences Research Ethics Board at Queen’s University. The results of this study will be actively disseminated through manuscript publication and conference presentations.

NCT05761613.

Vaccinations are an important preventative measure in reducing the spread of infectious diseases worldwide. However, concerns of undervaccination during childhood have become increasingly common. The current study aims to investigate changes in attitudes towards childhood vaccinations prior to the COVID-19 pandemic using a national sample from New Zealand.

Age-based, period-based, and cohort-based changes were assessed using cohort-sequential latent growth modelling in 11 overlapping birth cohorts, which spanned the ages of 23–79 years.

Data were taken from the New Zealand Attitudes and Values Study where 58 654 adults completed at least one wave across a 7-year period (2013 and 2015–2019).

The period-based and cohort-based models fit the data equally well (²(282)=8547.93, p2(273)=8514.87, p

Overall, both the cohort-based and period-based models reveal changes in vaccination attitudes suggesting that even prior to the COVID-19 pandemic, societal influences had an impact on attitudes towards childhood vaccination.