الفهرس 
Material and methodsOnly 14 pages are availabe for public view
 |  | from | 116 |  |  |
| | | from | 116 | | |
Abstract
1. INTRODUCTION
Brucellosis is an infectious and contagious disease caused’
by bacteria of the genus Brucella; it primarily affects cattle, sheep,
goats, swine and dogs, anti is characterized by abortion or
infertili y. I is also considered CIne of the most i portant ba terial
anthropozoonotic diseases that affects uman and is
cham terized by intermittent fever, chills, night sweating,
headache, myalgia, arthralgia and a diversity of non-specific
symptoms (Metcalfet aI.. 1994).
Brucellosis remains a . erious zoonosis of bod public healtl
and economic significance in many developing countries. World
Health Organization (WHO) reported half million new cases
worldwide each year but these numbers an: said to .be greatly
underestimate the true incidence of human disease (WHO. 1997).
Brucello is i caused by members of the genus Brucella
which includes Brucella abortlls Brucello: melitensis, Brucella suis
and Brucella cQnis. Brucella melitensis is considered the most
virulent and pathogenic strain among different Brucella species
for both animals and man (Elberg, 1986). It can be transmitted
from infected animals to man either directly or indirectly, direct
transmissiou occurs through contact with infected animals and
their secretions so the disease is considered largely an
occuperional disease affectspeople such as veterinarians, fanners,
slaughterhouse workers and pathologists; while the indirect