NOTE* Study Intervention is the vaccine itself.
"exposed to the study intervention by inhalation or skin contact"
Sure seems like they're saying the jab is contagious.(self replicating?)
https://cdn.pfizer.com/pfizercom/2020-11/C4591001_Clinical_Protocol_Nov2020.pdf
No, they're conducting a clinical trial and want to be made aware of any potential contact with pregnant women.
There have been drugs that can be transmitted from one person to another by touch or bodily fluids so I'm sure it's part of their standard protocol for every new trial.
Do you really think the vaccine is spreading itself?