Durability of doxycycline effectiveness against gonorrhoea after implementation of post-exposure prophylaxis in southern California, USA: a retrospective, test-negative, observational study. - Yechezkel M; Helekal D; Kapadia B; Hong V; Pomichowski ME; Reyes IAC; Davis GS; Müller NF; Grad YH; Tartof SY; Lewnard JA (The Lancet. Infectious diseases, 2026)