Ultrasensitive Nano-Biosensors for Virus Detection

Viruses are among the most contagious infections and are the main cause of death globally. The lack of effective clinical treatments for most viruses highlights the importance of prompt and correct diagnosis at the earliest signs of infection to stop the pathogens from spreading quickly. From diagnostics to therapies, the development of a sensitive and focused detection system for pathogenic viral agents is crucial. However, the current traditional methods are laborious and time-consuming, require expensive equipment, and require qualified personnel. This clearly confirms the need for a simple method to detect virus infection at a low cost without sample pre-treatment, in other words: biosensors. A viral sensor with higher sensitivity and selectivity has been developed to achieve this goal by utilizing a variety of characteristics and methodologies. Due to their speed, cost-effectiveness, accuracy, sensitivity, and selectivity, biosensors might be seen as a tool to improve point-of-care diagnostics for numerous diseases over conventional methods. Additionally, these biosensors have been successfully applied to identify a broad range of viruses, enabling prompt administration of the appropriate medication. Diagnostic methods have recently received significant support from the field of nanotechnology thanks to the creation of intelligent, miniature nano-biosensors that have improved and elevated the process to a new level. The challenges and future prospects of developing such ultrasensitive nano-biosensors have also been taken into account before claiming that these nano-weapons are the ideal futuristic gold standard of diagnosis. Because of their portability, toughness, and affordability, nano-biosensors are an appropriate diagnostic agent for different types of viruses.