Pfizer-FDA clash: third dose or first of a new series?

The third dose was never mentioned in the approved guidelines, but given what we have seen it is not surprising that Pfizer is insisting that it be approved. But third dose of what? If the protection guaranteed by the American giant is nine months, the third dose looks more like the first in a new series that will launch us into a permanent vaccination campaign. The stop by the FDA and the WHO will not stop Pfizer, aided by countries like Italy that already take a third inoculation for granted.