persistent pest

0

I went to a friends house to feed her cats on Monday. On Wed I brought her home from the hospital and her cats are infested with fleas.  I have 2 cats of my own but they have Frontline monthly.  My friend thinks I gave her cats the fleas.  Can they reproduce in 2 days if one jumped on the cat? (Its winter here in Ohio)

More on how fast can fleas reproduce?