16988
Protozoan infections are the leading cause of morbidity and mortality among parasitic infections of humans , accounting for approximately 800 thousand mortalities and a loss of more than 30 million disability - adjusted life years annually .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None