We all know that soap and water are the only weapons needed against most viruses that lurk on bathroom surfaces and bedroom floors.

But there are more resistant organisms that can establish themselves on towels and tiles and can even be spread through common changing rooms.

BBC Mundo tells you defects are five of the most common.

warts

It is common to the knuckles, knees, and feet of many young children. These harmless rough bumps are caused by strains of the human papillomavirus.