79. Genus Chlamydia (culture, antigens, resistance). Animal pathogenic Chlamydia species.

Question 1

CULTURE?

Answer 1

Culture
• in living cells only
•5-7 day-old embryonated egg
•tissue culture (McCoy, L929, BHK, Vero)
•animals
•replication in the vacuoles of the cells

Question 2

Antigens and Resistance?

Answer 2

Antigens
• genus specific (heat resistant):
•LPS
• species specific:
•Protein Ag-s
Resistance
• week
• survives: faeces, fetal membranes, dust (1-3 weeks)

Question 3

Animal species?

Answer 3

• Chlamydia psittaci: psittacosis or ornithosis (parrot disease,
parrot fever) more than 130 bird sp. (57 parrot-sp.), lots of mammals,
human (conjunctivitis, diarrhoea, respiratory infection): parrot, pigeon, hen,
turkey, duck, goose,
human: influenza-like symptoms, headache, pneumonia,
occupational disease: pigeon-keepers, slaughterhouse workers,
Zoo-workers, veterinarians
• C. abortus: abortion (ewe, goat, cattle, swine)
• C. felis: cat conjunctivitis (30% of all cases)
• C. pecorum: arthritis, pneumonia, encephalomyelitis in ruminants