42441
" Schistosoma haematobium " ( " urinary blood fluke " ) is a species of digenetic trematode , belonging to a group ( genus ) of blood flukes ( " Schistosoma " ) .
 Schistosoma
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Schistosoma