4084
the world health organization says there are 4200 sars cases so far , more than 250 deaths in 27 countries and there is no cure .
 27 countries, the world health organization
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 27 countries, the world health organization