Moraxella

Cat + Oxi + , non ferment, require serum/blood, virulent are fimbriated/piliated

Biochemical characteristics of M. bovis

RTX Toxin and Fimbriae ( I {persistent infection} and Q {Pili})

principal virulence factors of M. bovis

Moraxella bovis

cause of Infectious Bovine Keratoconjunctivitis, Pink Eye, Contagious Ophthalmia in Cattle

M. catarrhalis

can cause dss. in humans

M. bovrei, M. caprae

Isolated from URT of healthy goats

M. canis

Member of the oral flora of dogs

M. bovis, M. bovoculi, M. oculi

Isolated from animals affected by IBK

M. cuniculi

Isolated from IBK in asso.w/other organism

M. caviae

Isolated from mucosal flora of guinea pigs

M. lacunata (M. liquefaciens)

Pneumonia and encephalitis OPPORTUNISTIC PATHOGENS

M. nonliquefaciens

associated with abortion of equine fetuses, septicemia

Fluorescent Antibody Technique FAT

Diagnostic Procedures to demonstrate M.bovis in smears

Chloramphenicol, tetracycline, ethidium bromide (a carcinogen), furazolidone

Drugs for IBK

Score 1

Lesion score of An active lesion involving

less than one-third of the cornea.

Score 2

Lesion score of an active lesion involving

one-third to two-thirds of the

cornea.

Score 3

Lesion score of an active lesion involving

more than two-thirds of the cornea.

Score 4

Lesion score of an active lesion with perforation of the cornea