Dust Sample PCR Detection for Targeted Indoor Virus Surveillance
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Solution Overview
Problem
Existing methods for monitoring viral diseases like COVID-19 are inadequate for targeted surveillance in indoor environments, particularly in high-risk settings, as they are cumbersome, expensive, or not sensitive enough to detect asymptomatic carriers.
Innovation Solution
Collecting and analyzing dust samples for viral nucleic acids, such as SARS-CoV-2 RNA or DNA, using PCR-based methods like RT-qPCR, ddPCR, and dPCR, to provide a matrix for environmental surveillance that complements individual testing and wastewater monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wastewater monitoring is used for viral surveillance, then population-level monitoring is achieved, but the method is cumbersome and not all individuals shed virus in feces
Solution Approach 1:
The patent introduces dust as an intermediary medium to capture viral particles from respiratory droplets. Instead of relying on wastewater which requires complex collection and processing infrastructure, dust samples can be easily collected from indoor surfaces using simple sampling devices, providing a more practical alternative for environmental surveillance
Solution Approach 2:
The patent replaces the mechanical complexity of wastewater collection and processing systems with a simpler dust sampling approach. Dust samples can be collected using basic vacuum cleaners or sampling devices, eliminating the need for sophisticated wastewater infrastructure while maintaining surveillance capability
2Measurement precision
If individual testing is performed for viral detection, then detection accuracy is improved, but the approach is not scalable for building-level surveillance
Solution Approach 1:
The patent merges individual viral detection capability with environmental surveillance by collecting dust samples that accumulate viral particles from multiple individuals. This allows building-level monitoring to maintain detection accuracy while scaling up to monitor entire populations indirectly through environmental sampling
Solution Approach 2:
The patent creates a universal surveillance system that can monitor both individual viral presence and building-level transmission dynamics through the same dust sampling approach. The method serves multiple functions: detecting viral presence, tracking transmission patterns, and identifying outbreak sources, all while remaining scalable for different building sizes and population levels
3Ease of operation
If dust sampling is used for viral detection, then ease of sample collection is improved, but sample processing complexity increases
Solution Approach 1:
The patent performs preliminary viral nucleic acid extraction and concentration in the field or at centralized processing facilities before laboratory analysis. This preliminary processing step simplifies subsequent laboratory work by providing pre-prepared samples, reducing the overall complexity burden while maintaining ease of collection
Solution Approach 2:
The patent uses viral nucleic acids as an intermediary target that bridges the simple dust collection process and complex laboratory analysis. By extracting and concentrating these nucleic acids from dust samples, the system transforms the simple collection process into a manageable workflow that maintains ease of operation while enabling comprehensive analysis
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Dust samples offer a convenient and efficient method for viral surveillance, detecting SARS-CoV-2 with high positivity rates and persistence, allowing for timely identification of outbreaks in high-risk settings without the need for cold storage and simplifying sample collection.
Implementation Method 1
a method for detection of a viral nucleic acid (e.g., viral RNA or viral DNA) in a dust sample is disclosed herein
Implementation Method 2
PCR-based methods like RT-qPCR, ddPCR, and dPCR
Data Source
AI summary
Described herein are methods for the detection of a virus (e.g., SARS-CoV-2) RNA in dust, which can be used for continued environmental surveillance of the viral disease. Targeted monitoring of dust in high-concern buildings can complement broader population-level monitoring approaches. Additionally, a method for detection of a viral RNA in a dust sample is disclosed herein.