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Climate change and diagnostic samples - Opening Pandora's (post) box
Paul Klapper1, Raghavendran Kulasegaran-Shylini2, Andrew Dodgson2
1United Kingdom Health Security Agency, London, UK; Division of Evolution, Infection and Genomics, University of Manchester, Manchester, UK.
Climate change impacts diagnostic testing. The UK COVID-19 home testing program succeeded without temperature control, revealing gaps in international transport standards for biological samples.
Area of Science:
- Environmental Science
- Public Health
- Logistics
Background:
- Climate change is altering environmental conditions globally.
- Healthcare delivery is shifting towards decentralized and home-based models.
- The COVID-19 pandemic necessitated large-scale diagnostic testing, including home-based programs.
Purpose of the Study:
- To analyze how climate change affects diagnostic testing logistics.
- To evaluate the UK's COVID-19 home testing program as a case study.
- To advocate for updated international standards for biological sample transport.
Main Methods:
- A narrative analysis based on operational experience from the UK National Testing Programme.
- Examination of the design and implementation of a large-scale home testing model.
- Assessment of biological sample transport via postal services without temperature control.
Main Results:
- The UK's home testing program operated successfully at scale despite lacking temperature-controlled logistics.
- Sample stability was validated across extreme winter and summer conditions.
- The program highlighted a lack of international standards (e.g., ISO guidelines) for environmental factors in biological sample transport.
Conclusions:
- Current international standards for transporting biological samples are inadequate for climate-affected contexts and decentralized healthcare.
- Environmental resilience must be a key consideration in diagnostic logistics.
- New standards are urgently needed to ensure sample quality and reliability amidst climate variability.
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