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Table 1 Estimated prevalence of Chlamydiales infections in ixodid ticks removed from Australian wildlife based on a maximum likelihood analysis

From: Novel Chlamydiales genotypes identified in ticks from Australian wildlife

  No. of ticks No. of pools No. of PCR positive pools (%) Estimated prevalence in individual ticks % Minimum prevalence (%)a Maximum prevalence (%)b
Tick species
I. tasmani 310 73 54 (73.9) 26.9 17.4 71.6
I. holocyclus 112 35 29 (82.9) 46.8 33 61.9
I. ornithorhynchi 2 2 2 (100) na na na
H. bancrofti 10 10 10 (100) na na na
H. longicornis 1 1 1 (100) na na na
H. humerosa 1 1 1 (100) na na na
B. auruginans 2 2 2 (100) na na na
Wildlife host
 Koala (Phascolarctos cinereus) 400 86 61 (70.9) 24 15.25 73.5
 Bare nosed wombat (Vombatus ursinus) 5 5 5 (100) na na na
 Eastern grey kangaroo (Macropus giganteus) 9 9 9 (100) na na na
 Red necked wallaby (Macropus rufogriseus) 3 3 3 (100) na na na
 Spotted tail quoll (Dasyurus maculatus) 4 4 4 (100) na na na
 Long nosed bandicoot (Perameles nasuta) 3 3 3 (100) na na na
 Platypus (Ornithorhynchus anatinus) 2 2 2 (100) na na na
 Squirrel glider (Petaurus norfolcensis) 2 2 2 (100) na na na
 Short eared possum (Trichosurus caninus) 1 1 1 (100) na na na
 Brush tail possum (Trichosurus vulpecula) 7 7 7 (100) na na na
 Ring tailed possum (Pseudocheirus peregrinus) 2 2 2 (100) na na na
  1. Abbreviation: na not applicable; pools only consisted of one individual tick
  2. a The minimum prevalence in individual ticks is calculated on the assumption only one individual tick per Chlamydiales positive pool is infected
  3. b The maximum individual prevalence is similarly calculated on the assumption every individual tick in a PCR positive pool is infected