GMAT Critical Reasoning (CR) | Re: Outbreaks of Rift Valley fever occur irregularly in East

There are two reasons that the vaccine is not used:
1. Expensive
2. Not effective till one month of administering
The experts predict that in spite of the above two reasons, the vaccine would be used. Why?

The correct option should address any/both of the above two issues, i.e. it would suggest that the price would come down and/or that the vaccine can be administered at least one month before the onset of
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