Pasteurella

Various different species belonging to the genus Pasteurella occur in the normal mucosal flora of animals and humans; some are pathogenic in animals. Their significance as human pathogens is minor. Infections by Pasteurella multocida are described here as examples of human pasteurelloses. The bacteria invade the organism through bite or scratch injuries or in droplets during contact with infected animals. Weakened immune defenses may then result in either local wound infections with lymphadenitis, subacute to chronic infections of the lower respiratory tract, or CNS infections (after cerebral trauma or brain surgery). Diagnosis is based on pathogen identification.

A penicillin or cephalosporin is recommended for therapy. Sources of infection include domestic animals (dogs, cats, birds, guinea pigs) and livestock (cattle, sheep, goats, pigs).

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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