“…Even when the use of antibiotics is evident because of the global decline in syphilis prevalence (Sgaier et al, 2011), there is some evidence showing that in the last decade there has been a reappearing in several countries, specially among high-risk population groups such as MSM (Buchacz et al, 2005;Doherty et al, 2002;Gao et al, 2009;Hopkins et al, 2004;Peterman et al, 2005). In addition, the low effectiveness of contraceptives (including condoms) to prevent infections such as syphilis, on one hand, and the indiscriminate use of antibiotics that increases the risk of resistant chains, on the other, could lead to a more complex situation regarding the eradication of this infection even when there is an effective treatment available nowadays.…”