My memory of the Reston chapters in Hot Zone is a little fuzzy, but I believe the virus spread not only from cage to cage, but from room to room throughout the

My memory of the Reston chapters in Hot Zone is a little fuzzy, but I believe the virus spread not only from cage to cage, but from room to room throughout the facility. Of course there could have been some human vector, but it could have also been airborne in the ventilation system.