I dedicate this article to everyone, considering the unfortunate events that we all experienced during the 2019 Corona Virus Pandemic ( Covid19 ). And for better understanding about viruses and their traits, and how we should behave in public and participate to break the chain of spread. So please, wear your mask in public area, frequently wash your hand, and do social distancing. Lastly be happy and keep healthy everybody.
Courtesy to University of North Dakota