Is it possible to get chicken pox again,after having it 6 weeks earlier?

[Bubbaloo]

Ds2 had chicken pox(quite badly) at the beginning of July,followed by dh and then finally Ds1 2 weeks ago.
Dh has just bathed ds2 and has noticed about 15 new spots on his chest,although they're not blistery ones iykwim.
Definately do not look like a heat rash,as they're dotted around,rather than in one place.
Can it be possible to get it again,so quickly?
Thanks

it is def possible to get it more that once as a work colleague of mine has had it three times however no idea how soon after you can get it again

Thanks.
I've also had it twice,as a child,but just wondered whether it was possible to get it again so soon after having it.