Pneumonia in adult cattle.

This focus article has been prepared by Arthur Otter of the APHA Cattle Expert Group and Anna Brzozowska of the Surveillance Intelligence Unit.

Suckler calf diseases.

This focus article has been prepared by Arthur Otter of the APHA Cattle Expert Group.

Listeria monocytogenes sequence type 1 is predominant in ruminant rhombencephalitis.

Listeria (L.) monocytogenes is an opportunistic pathogen causing life-threatening infections in diverse mammalian species including humans and ruminants. As little is known on the link between strains and clinicopathological phenotypes, we studied potential strain-associated virulence and organ tropism in L.

Yersinia pseudotuberculosis infection in a suckler calf in the United Kingdom: a case report.

Enterocolitis caused by Yersinia pseudotuberculosis was identified by bacterial culture and histopathology in a 5-month old suckler calf. No other significant enteric pathogens were detected. Diagnosis of this condition can be missed if selective media are not used for bacteriology and if histopathology is not attempted or the alimentary tract is unsuitable for examination.