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At least 271 records · Page 15Linked to original sources
PubMed1975

An epornitic of fatal chlamydiosis (ornithosis) in South Carolina turkeys.

An unusual epornitic of fatal chlamydiosis occurred in a flock of 10,283 domestic turkeys in South Carolina. Total mortality over a 2-week period was 483 birds (4.7% of the flock). The principal gross lesion was severe pericarditis, but there was little or no airsacculitis, an observation at variance with many previous reports of chlamydiosis. Furthermore, an unusually heavy infestation of the turkeys with sanguivorous black flies (Simulium slossonae and S congareenarum) was observed at the time of the epornitic, an occurrence that may have permitted rapid transmission of chlamydiae between turkeys in the affected flock. The strains of Chlamydia psittaci isolated from naturally infected turkeys caused pericarditis and heptopathy as well as occasional airsacculitis, with a 41% mortality in intravenously (IV) inoculated turkeys. Turkeys inoculated intramuscularly (IM) or intraperitoneally (IP) did not die; however, airsacculitis was observed in more than 85% of turkeys inoculated intraperitoneally or exposed to infection by pen contact with inoculated turkeys. The strain was highly infectious but not lethal by the latter method of transmission. The strain was similar to other virulent chlamydiae isolated from turkeys, in that small numbers of the organism caused fatal infection in guinea pigs when inoculated IP.

Air Sacs↗
PubMed2001

[Clinical comparison of Chlamydia pneumoniae pneumonia, ornithosis, and Mycoplasma pneumoniae pneumonia].

To elucidate the differences between the clinical aspects of Chlamydia pneumoniae (C. pn) pneumonia and those of two other atypical pneumonias, Chlamydia psittaci (C. ps) pneumonia and Mycoplasma pneumoniae (M. pn) pneumonia, we analyzed the symptoms and laboratory data on the cases of these three types of pneumonia: 46 cases of C. pn pneumonia, 39 cases of C. ps pneumonia, and 131 cases of M. pn pneumonia. C. pn pneumonia was significantly more frequent among the elderly (mean 70 +/- 16 years, p < 0.01) and patients were significantly more likely to be male (76%, p < 0.05). A white blood cell count of over 10,000 was seen in 46% of C. pn pneumonia cases, a higher proportion than those of C. ps pneumonia (15%, p = 0.03) or M. pn pneumonia (18%, p = 0.006) cases. The proportions of patients with these infections who had an elevated GOT or GPT were not significantly different. Maximum body temperature was higher in M. pn pneumonia than in C. pn pneumonia (p = 0.003). Purulent sputa were seen in 44% of C. pn pneumonia cases and 50% of M. pn pneumonia cases, and these rates were higher than that of 13% in C. ps pneumonia cases (p = 0.002, p = 0.004). Dyspnea and anorexia symptoms were the most frequent in C. pn pneumonia cases (24% and 29%, respectively, the highest of all three pneumonias). There were clinical differences between C. pn pneumonia and the other two atypical pneumonias. However, there was some difficulty in differentiating between C. pn pneumonia and typical bacterial pneumonia because mixed infections were common (24%) in C. pn pneumonia cases.

Adult↗