Virulence and resistance adaptation of Streptococcus agalactiae Ib/ST261 infecting bullfrogs in Hainan, China between 2019 and 2023 - Guiying Guo; Zihao Di; Sheng Huang; Xuesong Li; Nuo Yang; Lixia Fan; Jun Xie; Xiuqing Cai; Yuqi Meng; Fei Yan; Jiping Zheng (Brazilian Journal of Microbiology, 2026)