What does RSV stand for?

Reserve

That portion of the demonstrated reserve base that is estimated to be recoverable at the time of determination. The reserve is derived by applying a recovery factor to that component of the identified coal resource designated as the demonstrated reserve base. Portion of a body of troops that is kept to the rear, or withheld from action at the beginning of an engagement, in order to be available for a decisive movement. Members of the uniformed Services who are not in active service but who are subject to call to active duty.

Respiratory Syncitial Virus