A Comparative Analysis of Optical Biosensors for Rapid Detection of SARS‐CoV‐2 and Influenza

ABSTRACT Airborne pathogens, such as influenza and SARS‐CoV‐2, pose significant health risks. While traditional diagnostic methods have limitations, optical biosensors offer a promising solution due to their rapid, sensitive, and cost‐effective nature. This review focuses on the application of optical biosensors, including colorimetry, surface plasmon resonance, surface‐enhanced Raman spectroscopy, and fluorescence techniques, for the detection of influenza and SARS‐CoV‐2. We discuss the advantages of these techniques, such as their potential for point‐of‐care testing and early disease detection. By addressing the limitations of existing methods and exploring emerging technologies, optical biosensors can play a crucial role in combating the spread of airborne pathogens. This review provides a comprehensive overview of optical biosensor techniques for the detection of both SARS‐CoV‐2 and influenza, addressing a significant gap in the literature.