Are bedbugs spread from person to person?

No. Bedbugs are nocturnal and only come out to feed in the dark. They hide in mattresses, box springs, around picture frames and underneath floorboards or floor trim. They can accidentally stow away in suitcases if these are left open in the dark during travel. It is advisable to zip suitcases after use when traveling. Each bed bug feeds for 5 minutes in the dark and often bites 3 times in a line.
Typically not. Because bed bugs are visible, they are usually spread from one form of furniture or household item to another. People not locating their hiding place is the main issue. They could be in something someone is carrying, though.