Universal strangeness production and size fluctuactions in small and large systems

Strangeness production in high multiplicity events gives indications on the transverse size fluctuactionsin nucleus-nucleus (AA), proton-nucleus (pA) and proton-proton (pp) collisions. In particularthe behavior of strange particle hadronization in "small" (pp, pA) and "large" (AA) initialconfigurations of the collision can be tested for the specific particle species, for different centralitiesand for large fluctuations of the transverse size in pA and pp by using the recent ALICEdata. A universality of strange hadron production emerges by introducing a dynamical variableproportional to the initial parton density in the transverse plane.