On March 11, 2020, the World Health Organization was forced to issue a pandemic declaration due to the outbreak's astonishing rate of geographic expansion. The seventh human-infecting coronavirus is the SARS-CoV-2, which also causes COVID-19. SARS caused about 10% of fatalities, whereas MERS caused up to 35%, making it one of the deadliest human viruses. It has been determined that the SARS-CoV-2 is substantially more transmissible from person to person. Containment of the disease is a difficult public health concern since it can spread swiftly and undetected through asymptomatic carriers and can be undetected for long periods of time. CRISPR technology, IgG assay, spike protein detection, and AI use are some current developments in diagnostic testing.