COVID-19 caused by SARS-CoV-2 started as an outbreak in Wuhan, China in December 2019. Despite strict measures put up by China, its silent but highly contagious nature led to widespread dissemination which made World Health Organization (WHO) declare it as a global pandemic on 11 March 2020.
For More: https://doi.org/10.3126/njn.v17i1.28334
