NEW DELHI : The recent rise of a new coronavirus strain, considered more infectious than the existing one, could further push back a recovery of international airlines operations by a few quarters as countries are rushing to close their borders to prevent the spread of this new strain of the virus, industry experts said.Several countries -- including India -- have temporarily suspended flights to and from the UK amid concerns that unrestricted movement will trigger a renewed surge in covid cases.Also Read | Dark underbelly of India Inc’s shop floorsThe impact of the new strain of virus on international airline operations and its recovery will depend on how fatal it is, and also on the launch of a vaccine and its availability for the masses,.