Thank you very much for your comment I appreciate it very much. Responding to your question if it is possible that one tooth to the other can be infected with tooth decay, if the decay is in the proximal sides ie in the space from one tooth to the other, in this only case is possible because it will affect the neighboring tooth, a hug. 
RE: 🦷🦠Can dental caries be transmitted? | ¿La caries dental se puede transmitir?🦠🦷