Moraxella bovoculi is a recently described bacterium that is associated with infectious bovine keratoconjunctivitis (IBK) or "pinkeye" in cattle. In this study, closed circularized genomes were generated for seven M. bovoculi isolates: three that originated from the eyes of clinical IBK bovine cases and four from the deep nasopharynx of asymptomatic cattle. Isolates that originated from the eye...

Active immunization of guinea pigs and rabbits with outer membrane proteins (OMP) isolated from Shigella flexneri 3a and Shigella sonnei phase I protected the animals against keratoconjunctivitis shigellosa induced with the homologous or heterologous strain. Protection was also achieved in rabbits after passive immunization with anti-OMP immune serum. Active immunization with lipopolysaccharide...

A total of 120 purebred Hereford cattle were selected from a herd on a ranch in Argentina that had a severe outbreak of infectious bovine keratoconjunctivitis (IBK, pinkeye) caused by Moraxella bovis. The animals were separated into six treatment groups: a nonmedicated control group, a group that received oxytetracycline at 300 mg injected intrapalpebrally, and four groups that received tilmico...

Certain strains of Moraxella bovis produce tissue-damaging enzymes which may initiate or potentiate infectious bovine keratoconjunctivitis. Thirteen reference strains of this species were characterized physiologically and screened for production of various enzymes by some conventional biochemical tests and the API ZYM system (Analytab Products, Plainview, N.Y.). All 13 strains were hemolytic. A...

Chlamydia trachomatis is one of the infectious cause of ocular disease that is endemic in the regions with limited sanitary resources. The infection may start on eye lids and progress to trichiasis, keratoconjunctivitis and corneal opacity, that eventually lead to vision loss. The chronic infection of the same microorganism in female reproductive system may be associated with pelvic inflammator...

To report two cases of bilateral conjunctival granuloma with histopathological features of the Splendore-Hoeppli phenomenon and review of the literature. Two female patients, one with a history of pulmonary eosinophilic infiltration and another with a history of vernal keratoconjunctivitis, presented with bilateral cream to yellow colored nodules in the superior bulbar conjunctiva. Histopatholo...

The aim of this study was to determine the differences in the antimicrobial susceptibility profiles of Moraxella bovis, M. bovoculi and M. ovis. Thirty-two strains of Moraxella spp. isolated from cattle and sheep with infectious keratoconjunctivitis were tested via broth microdilution method to determine their susceptibility to ampicillin, cefoperazone, ceftiofur, cloxacillin, enrofloxacin, flo...

Though it is accepted that emerging infectious diseases are a threat to planet biodiversity, little information exists about their role as drivers of species extinction. Populations are also affected by natural catastrophes and other pathogens, making it difficult to estimate the particular impact of emerging infectious diseases. Border disease virus genogroup 4 (BDV-4) caused a previously unre...