Positive psychological changes and associated factors among community health workers post-COVID-19 in China: a mixed-methods study - Qingyu Li; Yuhang Zhang; Jiaruo Sun; Jingtao Zhou; Siwen Huang; Liqun Wu; Wannian Liang; Jiming Zhu; Huatang Zeng; Sitong Luo (Frontiers in Public Health, 2026)