Environmental Pest Management [HH200]; Integrated Pest Management [HH300]; Pesticides and Drugs; Control [HH405]; Host Resistance and Immunity [HH600]; Other Control Measures [HH700]; Dairy Animals [LL110]; Prion, Viral, Bacterial and Fungal Pathogens of Animals [LL821]; Protozoan, Helminth, Mollusc and Arthropod Parasites of Animals [LL822]; Diagnosis of Animal Diseases [LL886]; bacterial diseases; calves; clinical aspects; control; cryptosporidiosis; dairy cattle; diagnosis; diarrhoea; disease control; disease prevalence; disease prevention; drug therapy; enterotoxigenic Escherichia coli; epidemiology; protozoal infections; vaccination; vaccines; viral diseases; parasites; infections; parasitoses; Bovine coronavirus; calf diarrhoea rotavirus; cattle; coccidia; Cryptosporidium; Salmonella; Escherichia coli; Protozoa; UK; Betacoronavirus 1; Betacoronavirus; Coronavirinae; Coronaviridae; Nidovirales; positive-sense ssRNA Viruses; ssRNA Viruses; RNA Viruses; viruses; Rotavirus A; Rotavirus; Sedoreovirinae; Reoviridae; dsRNA Viruses; Bos; Bovidae; ruminants; Artiodactyla; mammals; vertebrates; Chordata; animals; eukaryotes; Apicomplexa; Cryptosporidiidae; Eucoccidiorida; Enterobacteriaceae; Enterobacteriales; Gammaproteobacteria; Proteobacteria; Bacteria; prokaryotes; British Isles; Western Europe; Europe; Commonwealth of Nations; high income countries; OECD Countries; very high Human Development Index countries; Escherichia; bacterial infections; bacterioses; bacterium; Calf diarrhea rotavirus; clinical picture; diarrhea; scouring; chemotherapy; ETEC; protozoal diseases; Britain; United Kingdom; viral infections; parasitosis; parasitic diseases; parasitic infestations; E. coli