Study Protocol: Air purifiers in classrooms for infection control - a pilot study

Background  

During the COVID-19 pandemic, school closures were implemented to safeguard students, teachers, and their families from the airborne transmission of SARS-CoV-2. However, these closures brought potential issues of disrupted learning, social isolation, and well-being challenges, highlighting the need for alternative measures. This pilot study aims to explore the feasibility and potential impact of integrating air purifiers into classrooms to enhance infection control. 

Objective 

The primary objective is to assess the acceptability and feasibility of deploying air purifiers equipped with HEPA filters in classroom environments. We will compare the efficiency of ceiling-mounted versus portable air purifiers on air quality, to guide further investigations. Further, we will explore various outcome measures and determine the viability and value of conducting a larger randomized trial.  

Method 

The first part of this study involves five classrooms in five schools, where two will be equipped with ceiling-mounted and three with portable air purifiers. All will receive air quality sensors. We will engage educators to evaluate the practicality of implementing these measures, by conducting interviews and observations. The second part will involve three classrooms from one school, where ceiling-mounted and portable air purifiers will be alternated over six weeks to assess their efficacy in real-world conditions. We will collect data on airborne particle levels and overall air quality. 

Expected Results 

This pilot study aims to provide insights into the feasibility of using air purifiers for infection control in classrooms, and the effect of air purifiers on air quality in a real-world setting. Moreover, stakeholder perspectives gathered through interviews will provide valuable insights into the acceptability and feasibility of such interventions. Ultimately, the results will lay the groundwork for larger-scale trials and potential policy recommendations, steering efforts to safeguard the well-being of students, educators, and the broader community within educational settings.