"March 2020" -- Cover.

Preface: ruminantions on parasite control -- Biology and epidemiology of gastrointestinal nematodes in cattle -- Biology, epidemiology, diagnosis, and management of anthelmintic resistance in gastrointestinal nematodes of livestock -- Refugia-based strategies for parasite control in livestock -- Epidemiology and control of gastrointestinal nematodes of cattle in southern climates -- Epidemiology and control of gastrointestinal nematodes of cattle in nothern climates -- Biology, epidemiology, and control of gastrointestinal nematodes of small ruminants -- Sustainable approaches to parasite control in ruminant livestock -- The epidemiology and control of liver flukes in cattle and sheep -- Diagnostic methods for detecting internal parasites of livestock -- What modeling parasites, transmission, and resistance can teach us -- Helminth vaccines in ruminants: from development to application -- Ectoparasites of cattle -- Ruminant coccidiosis -- Neosporosis, toxoplasmosis, and sarcocystosis in ruminants: an update -- Cryptosporidium and giardia in ruminants