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yellow daisy

(Encyclopedia)yellow daisy: see black-eyed Susan. ...

Yellow River

(Encyclopedia)Yellow River, China: see Huang He. ...

Lassa fever

(Encyclopedia)Lassa fever lăsˈə [key], an acute viral disease occurring mostly in W Africa, characterized by high fever, muscle aches, mouth ulcers, and bleeding in the skin in more severe cases. The disease was...

dengue fever

(Encyclopedia)dengue fever dĕngˈgē, –gā [key], acute infectious disease caused by four closely related viruses and transmitted by the bite of the female Aedes mosquito; it is also known as breakbone fever and...

typhoid fever

(Encyclopedia)typhoid fever acute, generalized infection caused by Salmonella typhi. The main sources of infection are contaminated water or milk and, especially in urban communities, food handlers who are carriers...

Yellow Emperor

(Encyclopedia)Yellow Emperor, Mandarin Huangdi, legendary Chinese ruler and culture hero; tradition holds that he reigned from 2697 b.c. to 2597 b.c. He is one of the mythical prehistoric emperors who supposedly cr...

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