75223
Shortly thereafter , DDT , originally used to combat malaria , and its metabolites were shown to cause population-level effects in raptorial birds .
 malaria
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:
 malaria