Incidence and control of brucellosis in the Near East region
2002
Refai, M.
In countries of the Near East region, brucellosis was reported in almost all domestic animals, particularly cattle, sheep and goats. Brucellosis in camels has been reported in Saudi Arabia, Kuwait, Oman, Iraq, Iran, Sudan, Egypt, Libya and Somalia. It has been reported even in racing camels in the United Arab Emirates. In Egypt, brucellosis has been reported also in buffaloes, equines and swine. Brucella melitensis biovar 3 is the most commonly isolated species from animals in Egypt, Jordan, Israel, Tunisia and Turkey. B. melitensis biovar 2 was reported in Turkey and Saudi Arabia, and B. melitensis biovar 1 in Libya, Oman and Israel. B. abortus biovar 1 was reported in Egypt, biovar 2 in Iran, biovar 3 in Iran and Turkey, and biovar 6 in Sudan. The countries with the highest incidence of human brucellosis are Saudi Arabia, Iran, Palestinian Authority, Syria, Jordan and Oman. Bahrain is reported to have zero incidence. Most human cases are caused by B. melitensis, particularly biovar 3. However, B. abortus has been responsible for an increasing number of cases in recent years, e.g. in Yemen, where B. abortus was identified in 45 cases and B. melitensis in 7 cases out of 330 cultures performed in 1995. Concerning control of brucellosis in animals, there is a controversy on the choice of policy. In some countries, the test and slaughter policy together with the vaccination of young females is adopted, in others, particularly with regard to sheep and goats; mass vaccination has been recently started. The most commonly used vaccines are B. abortus S19 and B. melitensis Rev.1 vaccines. B. abortus RB51 vaccine is used in some countries on small scale. Vaccination is limited to cattle and small ruminants.
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