Lo1, 2 yrs old, is on day 10 of being sick. All symptoms have been gone for 2 days now, except a cough. The cough only pops up when he is really active or tantruming. Originally he has a bad cold or RSV which turned into a double ear infection. My in-laws took him to the dr on Wednesday and he got antiobiotics, and he has been improving daily since then. The dr said to keep him away from the newborn until 48 hours of antibiotics, which was noon on Friday.... but he still has that cough so it makes me nervous. How long did the cough linger in your household? I know all children and illnesses are different, but just wondering.