Psittacosis classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2]

Overview

C psittaci may be classified into eight serovars according to variation in the major outer membrane protein (MOMP): serovar A to F, WC and M56.[1]

Classification

C psittaci may be classified into eight serovars according to variation in the major outer membrane protein (MOMP): serovar A to F, WC and M56.[1]. With recent advances in molecular diagnostic techniques, C. psittaci can be further classified into 20 genotypes, this was proposed recently on the basis of both ompA sequence analysis and multiple loci variable number of tandem repeats analysis (MLVA), However, the 8 classification is described in the table below.

Table 1: (Serotypes and genotypes of Chlamydophila psittaci)[2]

Serovar Genotype Predominant host order Human infection documented
A A Psittaformes:
  • Budgerigars
  • Cockatiels
  • Parakeets
Yes
B B Columbiformes:
  • Pigeons
  • Doves
Yes
C C Anseriformes:
  • Ducks
  • Geese
  • Swans
Yes
D D Galliformes:
  • Turkeys
  • Pheasants
  • Chickens
Yes
E E Struthioniformes:
  • Ostriches
  • Pigeons
  • Duck
Yes
F F Isolated from single parakeet and turkey only Yes
WC G Cattle No
M56 H Rodents No
E/B Ducks Yes

References

  1. 1.0 1.1 Vanrompay D, Butaye P, Sayada C, Ducatelle R, Haesebrouck F (1997). "Characterization of avian Chlamydia psittaci strains using omp1 restriction mapping and serovar-specific monoclonal antibodies". Res Microbiol. 148 (4): 327–33. doi:10.1016/S0923-2508(97)81588-4. PMID 9765811.
  2. Balter S, Janower ML (1975). "The use of photochromic eyeglasses by radiologists". Radiology. 116 (02): 450. doi:10.1148/116.2.450. PMID 1153750.