Is there any clinical feature and morphology differenece between the previous Covid 19 and new strain of Covid? How it happened? Was it happened because of resistance, mutation or any? How we differenciate it clinicaly, laboratory, if any? Do you suspect that countries in the world will close their transport like we did as the previous because of Covid 19? Can we prevent it? Is there any difference in prevention measure practice? Do you think, the new strain of Covid will influence worlds' economy more than theCovid 19? Your geniun comments, feedbacks and sugesstions will have a great value for me. Thanks Getasew A.