109613
An estimated 29 % of people in parts of East Africa may have multiple copies of the gene , and will therefore not be adequately treated with standard doses of drugs such as the painkiller codeine ( which is activated by the enzyme ) .
 East Africa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 East Africa