Preprints are manuscripts made publicly available before they have been submitted for formal peer review and publication. They might contain new research findings or data. Preprints can be a draft or final version of an author's research but must not have been accepted for publication at the time of submission.
Currently, the COVID‐19 has directly affected the millions of humans lives. The symptoms of
the disease involving fever, malaise, chest infection, and breathing difficulties, were identified, and its
existence is continuously becoming restructured. The World Health Organization (WHO)
had mentioned the wide diagnostics test besides COVID-19 that would also assist medical facilities to
recognize infectious diseases as well as currently focusing efficiently on preventing and afterward
defeating this viral disease. The infection is usually transmitted among human beings in direct contact,
greatest through the liquid bubbles generated through cough, sneeze, or speaking. This paper reviews
the COVID 19 pandemic, its history, current updates, contact tracing applications, and use of emerging
technologies like the Internet of Things (IoT) and Blockchain for stopping the spreading and provide
service online to the patient from a distance.