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Viruses remain a significant public health concern worldwide. Recently, humanity has faced deadly viral infections, including Zika, Ebola and the current severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2). The threat is associated with the ability of the viruses to mutate frequently and adapt to different hosts. Thus, there is the need for robust detection and classification of emerging virus strains to ensure that humanity is prepared in terms of vaccine and drug developments. A point or stand‐off biosensor that can detect and classify viruses from indoor and outdoor environments would be suited for viral surveillance. Light detection and ranging (LiDAR) is a facile and versatile tool that has been explored for stand‐off detection in different environments including atmospheric, oceans and forest sensing. Notably, laser‐induced fluorescence‐light detection and ranging (LIF‐LiDAR) has been used to identify MS2 bacteriophage on artificially contaminated surgical equipment or released amidst other primary biological aerosol particles in laboratory‐like close chamber. It has also been shown to distinguish between different picornaviruses. Currently, the potentials of the LIF‐LiDAR technology for real‐time stand‐off surveillance of pathogenic viruses in indoor and outdoor environments have not been assessed. Considering the increasing applications of LIF‐LiDAR for potential microbial pathogens detection and classification, and the need for more robust tools for viral surveillance at safe distance, we critically evaluate the prospects and challenges of LIF‐LiDAR technology for real‐time stand‐off detection and classification of potentially pathogenic viruses in various environments.
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Potential of laser‐induced fluorescence‐light detection and ranging for future stand‐off virus surveillance
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