Streptococcus zooepidemicus

Colonises mucous membranes
Causes mastitis, pneumonia, sinusitis and navel infections in horses
S. zooepidemicus can cause similar signs to strangles in horses and may accompany RAO
Secondary invador after equine influenza
Colonises skin and mucous membranes of cattle, lambs, pigs and poultry and causes suppurative infections and septicaemia
Can cause vascular fragility, leading to haemorrhagic disease