“…Implementation of PrEP free of charge through the national health systems of these two countries began in 2017, with extensive expansion in later years [ 18 ], although few studies have evaluated the success of its implementation [ 27 , 32 , 33 , 34 ] and no survey has focused on studying the population of both countries together, much less comparing them [ 32 , 33 , 34 , 35 ]. Questions still remain whether PrEP can be translated to a successful public health intervention, leading to a decrease in the population-level incidence of HIV, if it is treated only as a local policy, without countries considering the dynamics of the flows of migration and information between countries, for example [ 36 ].…”