2Cdo 2Cdo:
I still think the overuse of antibacterial soaps and washes which only kill 99% of bacteria which would lead me to think that the surviving 1% is somewhat more resilient. Thus making the strain become more resilient over time.
It's a similar scenario with antibiotics. In the article, the girl was prescribed a bunch of different antibiotics, and never completed a single regime. So the resulting TB infection became adapted to all them.
Detergents themselves destroy cellular tissue of bacteria, so there really isn't an 'immunity' to build up with soap alone.