# Clean Air for Everyone (CLAIRE): an Intervention Study to Reduce the Amount of Fine Particulate Matter and Microorganisms in Classroom Air

> **NCT07479420** · NA · COMPLETED · sponsor: **Lidwien Smit** · enrollment: 180 (actual)

## Conditions studied

- Airborne Microorganisms
- Particulate Matter (PM)

## Interventions

- **DEVICE:** HEPA filter air cleaners
- **DEVICE:** Ionization or plasma air cleaners

## Key facts

- **NCT ID:** NCT07479420
- **Lead sponsor:** Lidwien Smit
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2023-12-06
- **Primary completion:** 2025-05-01
- **Final completion:** 2025-05-01
- **Target enrollment:** 180 (ACTUAL)
- **Last updated:** 2026-03-18

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07479420

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07479420, "Clean Air for Everyone (CLAIRE): an Intervention Study to Reduce the Amount of Fine Particulate Matter and Microorganisms in Classroom Air". Retrieved via AI Analytics 2026-06-16 from https://api.ai-analytics.org/clinical/NCT07479420. Licensed CC0.

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