Microbiology 11: Zoonoses Flashcards
Which 2 organisms are transmitted from UK farm/wild animals e.g chickens, cows ?
Campylobacter
Salmonella
Which bacteria is commonly transmitted from poorly BBQd poultry ?
Campylobacter
Which 4 organisms are transmitted from companion animals in the UK ?
Bartonella (kittens)
Toxoplasmosis
Ringworm
Psittacosis (parrot fever)
What is the treatment of a campylobacter infection ?
Supportive treatment- lots of water, paracetamol etc
Avoid contact with others and make sure regular hand washing
Which disease is caused by bartonella henselae infection in an immunocompetent patient ?
Cat scratch disease (mainly kittens)
- transmitted from the cat into the persons mouth causing a Macule which may start to ouse
- This can then cause regional adenopathy and even systemic systems such as fever, weight loss and night sweats.
What disease is caused by bartonella in an immune-compromised patient (HIV pt)?
Bacillary angiomatosis
- You get skin Papules, Hepatitis and multi organ/vasculature involvement
- Can be fatal especially in HIV patients.
Which disease transmitted from cats can cause foetal abnormalities in pregnant women ?
Toxoplasmosis (from the faeces)
Can cause still birth, progressive visual loss, motor and cognitive function loss
Which signs can toxoplasmosis cause in immunocompromised people ? (2)
- Neuropathy
- Seizures
A goat farmer from India presents with a month long history of fever, lethargy, loss of appetite, weight loss and sweating. On examination you notice he has one enlarged testicle. He admits to drinking unpasteurised milk from his goats.
Which organism is the likely cause of his infection ?
Brucella (he has brucellosis)
- Presents almost exactly like extra pulmonary TB
- comes from cattle and goats
- Transmission: Unpasteurised milk, Undercooked meat
- NB key difference is the big testicles / orchitis
This disease is transmitted from aerosolisation and inhalation of cattle excrement especially goats. There was an outbreak in Dutch goat farms. It presents with high fever, flu like symptoms and can cause hepatitis and endocarditis.
What is this disease ?
Q-fever
- from goats, sheep, cattle
- presents similar to brucellosis: fever, flu Sx - differences = pneumonia, hepatitis, endocarditis
What is the management of a patient that was bitten by a rabid looking dog in Thailand? (2)
Post exposure vaccination
AND
Immunoglobulin
A patient has been bitten by a rat and presents with fever, polyarthalgia and a purpurin rash.
What is the most likely diagnosis ?
Rat bite fever
A patient from the US has been bitten by a rat and presents with signs of ARDS and also has fever and myalgia. Dx?
Hantavirus pulmonary syndrome
- The same type of virus found in SE Asia causes bleeding and renal failure instead of pulmonary failure
- Key feature = resp failure
This disease is transmitted by rats, bats and ticks. It presents with fever, myalgia, flu-like symptoms and bleeding. This can be caused by Ebola…
What is the most likely disease ?
Viral haemorrhagic fever
- Bleeding is key feature
A 35 year old patient presents with abdominal cramps and diarrhoea after a BBQ what is the most likely source?
chicken
- This is most likely to be a case of campylobacter
- get diarrhoea, blating, cramps
