association of microbiologic flora with clinical, endoscopic, and pulmonary cytologic findings in foals with distal respiratory tract infection.undifferentiated distal respiratory tract disease (nasal discharge, cough, pneumonia) in foals (1 to 8 months old) is a burdensome economic problem on breeding farms; yet, the infective agents associated with these episodes have not been well described. possible causes of these episodes of illness were investigated by culturing specimens of proximal and distal airways of clinically diseased foals (n = 101), prior to any treatment, for aerobic and anaerobic bacteria and viruses (rhinoviruses, equ ...19938250386
epidemiology of equine upper respiratory tract disease on standardbred racetracks.the outbreaks of upper respiratory tract infections in horses at standardbred racetracks were investigated over a three year period. the most serious epidemics of respiratory disease occurred in the winter and spring seasons. both influenza viruses and equine herpesvirus 1 were shown to be present in the horse population. the herpesvirus was associated with respiratory disease particularly in the winter but the equine influenza viruses apparently were responsible for the major epidemics of respi ...1979218705
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