Fearnley, Lyle. Virulent zones: animal disease and global health at China's pandemic epicenter. 288 pp., illus., bibliogr. Durham, N.C.: Duke Univ. Press, 2020. £20.99 (paper)Keck, Frédéric. Avian reservoirs: virus hunters and birdwatchers in Chinese sentinel posts. x, 245 pp., illus., bibliogr. Durham, N.C.: Duke Univ. Press, 2020. £20.99 (paper)Porter, Natalie. Viral economies: bird flu experiments in Vietnam. 240 pp., illus., bibliogr. Chicago: Univ. Press, 2019. £22.00 (paper)