No, there was never any assumption. If you look at the old International Health Regulations and the new, modern ones, which in a sense are completely different, all that the old International Health Regulations required--and my legal colleague, Dennis Brodie, can add to this--was mandatory quarantine for three diseases: plague, cholera, and yellow fever. That was it.
In terms of what's happened since the old ones were in place, such as SARS and other new, novel, emerging diseases that WHO and the member states recognize, we really didn't have any sort of framework for coordination and collaboration. There weren't any previous International Health Regulations that had reporting requirements for conveyances. It was really just for the reporting of diseases.
When all the member states of WHO came to Geneva and negotiated the terms of a new, improved way forward in terms of the control of infectious disease outbreaks at the international level, all aspects were looked at, really, from a fresh start. So when, finally, all the expert deliberations were finished, it came to the point, as we've indicated before, in terms of advanced reporting, that there needed to be a good risk management approach for aircraft and watercraft.