Assessment of Genetic Diversity of Zoonotic Brucella spp. Recovered from Livestock in Egypt Using Multiple Locus VNTR Analysis

Table 2

Differential phenotypic characteristics of Brucella suis (strains 10 and 14) and B. abortus (strains 4 and 13) isolated from cattle in Egypt, 2003–2007. Three reference strains (B. melitensis strain Ether, B. suis strain 1330, and B. abortus strain 544) are included for comparison.

	B. melitensis strain Ether	B. suis strain 1330	B. abortus strain 544	Strain 10/14 (B. suis)	Strain 4/13 (B. abortus)
H2S production	−	+++	+	+++	+++
Urease activity	+ in 18–24 h	++ in <15 min	+ in 2 h	++ in 3–5 min	+ in 2 h
Growth in presence of dye thionin 1 : 50000	+	+	−	+	−
Growth in presence of dye thionin 1 : 100000	+	+	−	+	−
Growth in presence of dye fuchsin 1 : 50000	+	−	+	−	+
Growth in presence of dye fuchsin 1 : 100000	+	−	+	−	+
Agglutination with A anti-sera	+	+	+	+	+
Agglutination with M anti-sera	+	−	−	−	−