Nurture the plant without pruning it. It will put out more basals and growth when it gets stronger.

Give the rose time to mature. Other than the usual dead heading process it's best to leave vigorous growth be until the bush's typical growth pattern emerges. In the mean time the presumed insect/rose slug/slug(mollusk), damage should be addressed preventatively. Good clean foliage, free of insect damage that can be prevented or treated early on will give your bush a big shot in the arm.

Moses

Do you know the name of that rose, or what kind of rose it is? I agree that you should just take care of it - water and food (food only if you do not live in a climate where it freezes in the Winter), and see what it does next Spring when it is more mature. Then, if that cane has sprouted at the top, and is longer, or if you have other basil shoots which have turned into long canes, you can bend them horizontally to get more blooms all along the length. However, right now it needs just normal care - that is always the best way to get roses to bloom more.

Jackie