A Comprehensive Review of Detection Methods for SARS-CoV-2

Area of Science:

• Virology
• Infectious Diseases
• Diagnostic Technologies

Background:

• The COVID-19 pandemic, caused by SARS-CoV-2, has led to global health and social disruption.
• Accurate and timely diagnosis of SARS-CoV-2 infection is crucial for disease control.
• Existing diagnostic methods have limitations in terms of speed, accessibility, or accuracy.

Purpose of the Study:

• To review and compare various promising diagnostic methods for SARS-CoV-2 detection.
• To discuss the principles, advantages, and disadvantages of each method.
• To identify potential avenues for developing improved diagnostic tools.

Main Methods:

• Review of established techniques: reverse transcription-polymerase chain reaction (RT-PCR) and serological testing.
• Exploration of emerging technologies: point-of-care testing, nanotechnology-based approaches, biosensors, and amplicon-based metagenomic sequencing.
• Assessment of innovative surveillance strategies: smartphone-based disease surveillance and wastewater-based epidemiology (WBE).

Main Results:

• RT-PCR offers high sensitivity and specificity but requires laboratory infrastructure.
• Serological tests detect antibodies but may not indicate active infection.
• Novel methods show potential for rapid, point-of-care, or large-scale population screening.

Conclusions:

• A combination of diagnostic approaches may be necessary for comprehensive SARS-CoV-2 surveillance.
• Further development is needed to enhance the speed, accessibility, and cost-effectiveness of SARS-CoV-2 detection.
• Emerging technologies like WBE and nanotechnology offer promising solutions for future pandemic preparedness.