A chinese study a few months back found the virus in semen samples from infected men. All had been hospitalised and some were so far gone they needed cattle prod treatment to produce samples. Most were positive.
What I've not seen reported is whether its present in semen from asymptomatic carriers
But you have to assume there is a risk to the girl.
From the point of view of the girl creating a risk to you, as its a respiratory disease mouth to penis transfer is highly likely. It then depends on whether you then touch your cock, followed by touching your face, mouth, nose or eyes