Hi,
i just found out that I have it too - I have done a lot of research online. From what I have read on multiple websites, you do not build an immunity to molluscum, even though the body does eventually fight it off. You can become re-infected if re-exposed. The most common and successful way to get rid of them is to have them frozen off with liquid nitrogen, which is best to start with right away before the infection spreads. Don't pick at the lesions, you can spread them to other parts of the body too.. Wash your hands frequently.
Also, molluscum is considered an std now in the adult community, as with adults it is usually spread through sexual contact.
I just ordered an alternative treatment for it which I am going to try - got if off the web and boy I hope it isn't a scam. Molluscum - check out this link. It sounds plausible to me, I am very familiar with the anti-bacterial/fungal properties of silver. I was not previously aware of it's anti-viral properties, but it certainly seems plausible to me. I have also changed my diet - eliminating dairy and wheat, as people commonly have allergies/sensitivities to these two things, and the immune system can be compromised. In addition I have been loading up on the anti-viral supplements - echanimide anti-viral formula and oil of oregano always work wonders for me when I am sick. Hopefully they will boost my immune system enough to help me get started on kicking this molluscum too.
Either way, I would recommend getting the lesions treated somehow rather than just leaving them to heal on their own. Otherwise, you might have to wait years for them to go away, although they eventually will.