{Reference Type}: Letter {Title}: Doxycycline postexposure prophylaxis may delay seroconversion in incident syphilis. {Author}: Raccagni AR;Bruzzesi E;Castagna A;Nozza S; {Journal}: Sex Transm Infect {Volume}: 0 {Issue}: 0 {Year}: 2024 Jun 17 {Factor}: 4.199 {DOI}: 10.1136/sextrans-2024-056240