When My daughter had pink eye a year ago my dr told us that it was contagious and to consider it still contagious until 3 days of antibiotics have been completed. I was given the choice to shut down for the 3 days or my fiance had to take the days off work to be with her in a separate part of the house. I ended up closing down so that I could sanitize everything she may have touched while infected and to make sure she didn't spread the infection around again.