Although the disease had a decreasing trend during the recent years ( 11 ), it is still considered as a serious problem among various groups especially those living in villages ( 12 ).
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Trend Analysis and Affecting Components of Human Brucellosis Incidence During 2006 to 2016.
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The sentences
The incidence of brucellosis had a decreasing trend among people below 50 years old, but an increasing trend among groups above 50.