"Johnson & Johnson also announced that Janssen, in partnership with Bavarian Nordic A/S, has produced more than 400,000 regimens of the prime-boost vaccine for use in large-scale clinical trials by April 2015. A total of 2 million regimens is projected to be available through the course of 2015, with the ability to quickly scale up to a projected 5 million regimens, if required, over a 12- to 18-month period.
In October 2014, Johnson & Johnson announced a commitment of up to $200 million to accelerate and significantly expand production of an Ebola vaccine program in development at its Janssen Pharmaceutical Companies. The company has been seeking to share the financial risk of these vaccine and development clinical trial costs by pursuing governmental and non-governmental funding sources."

Note the words, "if required".