  We analyze high multiplicity proton-proton ($pp$) collision data at the
energies $\sqrt{s}=900$ GeV, $2.76$ TeV and $7$ TeV in the framework of the
String Percolation Model (SPM) in terms of the ratio of shear viscosity and
entropy density ($\eta/s$) showing that the model allows the formation of
strongly interacting collective medium in the high energy and high multiplicity
events in p-p collisions.
