A person with the virus can spread it to other areas by scratching the bumps. And as with many other viruses, regular hand-washing is the best way to prevent molluscum. Don’t share towels, hairbrushes, or other personal items. Teach your children not to share them either. Putting a bandage over an infected area can reduce the temptation to scratch or touch the bumps. Shaving over the bump can make it spread as well.