Potential Outbreaks of Covid-19 During the Year 2019-2020: A Review

The first outbreak of COVID-19 occurred last year in the city of China Wuhan. Initially, it spread in China and then to 209 countries worldwide, including the United States, Europe, Australia, and Asia. More than fifty thousand deaths and more than one million people have been affected worldwide. This number is increasing, which was mainly related to the lack of oxygen absorption in the lungs, which causes trouble in breathing as in this viral infection, reactive oxygen and nitrogen species have produced that play a role in binding with the SARS-CoV-2 S-glycoprotein. Various measures have been taken worldwide to control COVID-19 disease as its primary effect on the lungs and cause respiratory infections such as colds, pneumonia, and coughs. This viral infection causes upper respiratory infection and diarrhea in animals. The main reason for the transmission of this virus is aerial droplets. The viral infection membrane enters the human cell via the ACE-2 exopeptidase receptor. The WHO and ECDC recommend staying away from gathering along with crowded areas.