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===Feline infectious anaemia===
===Feline infectious anaemia===
*
*Caused by ''Haemobartonella felis''
*Organism found on surface of erythrocytes
*Common in roaming tom-cats of 1-3 years old
*Possibly transmitted via bite wounds or arthropods
*Recoverd cats become carriers
*Clinical signs
**Peracute disease is associated with severe anaemia and immunosuppression, and can be rapidly fatal
**Fever, anaemia, depression, weakness and jaundice occur in the acute form
**Anaemia, lethargy and weight loss occur in the chronic form
**Recovery can occur with a regenerative bone marrow response
**Severe feline infectious anaemia may occur in the presence of feline leukaemia virus
*Diagnosis
**Organism intermittently seen on the surface of red blood cells in Giemsa-stained blood smears
**Immunofluorescence of blood smears
**Reduced packed cell volume; regenerative anaemia
*Treatment
**Doxycycline for 3 weeks early in the course of the disease
**Blood transfusion
**Flea control
===Canine haemobartonellosis===
*Dogs infected with ''Haemobartonella canis'' usually asymptomatic
*Acute haemolytic anaemia may occur in dogs after splenectomy, immunosuppressive drug therapy or immunosuppressive infections
===Q fever===
*Caused by ''Coxiella burnetti''
*Influenza-like disease of humans in contact with farm animals
*Transmitted to humans by inhalation from parturient sheep, goats and cattle
*Organisms replicate in female genital tract and mammary glands of ruminants
*Shedding occurs in uterine discharges, foetal fluid and milk
*Infections in animals usually subclinical
*Sporadic abortions occur in sheep, goats, cattle, cats
*Infertility may result in ruminants, as well as placentitis or endometritis
*Hepatitis, myocarditis and interstitial pneumonia may occur in affected foetuses
*Diagnosis: MZN-stained smears of placental tissue and uterine discharges; immunofluorescence; PCR; culture; serology
*Control: disposal of infected placenta and separation of pregnant ruminants; inactivated vaccines