1. Ayalew S, Blackwood ER, Confer AW (2006) Sequence diversity of the immunogenic outer membrane lipoprotein PlpE from Mannheimia haemolytica serotypes 1, 2, and 6. Vet Microbiol 31:260–268
2. Bell S (2008) Respiratory disease in sheep. In Pract 30:200–207
3. Black P, Nunn M (2009) Impact of climate change and environmental change on emerging and re-emerging animal diseases and animal production. Proceedings of technical items presented in 77th general session of the OIE world assembly of delegates, 24–29 May, Paris, France, pp 15
4. Brogden KA, Lehmkuhl HD, Cutlip RC (1998) Pasteurella haemolytica complicated respiratory infections in sheep and goats. Vet Res 29:233–254
5. Chakraborty S, Kumar A, Tiwari R, Rahal A, Malik Y, Dhama K, Pal A, Prasad M (2014) Advances in diagnosis of respiratory diseases of small ruminants. Vet Med Int 2014:508304