http://www.flickr.com/photos/sparktography/388889060

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Fever

http://www.flickr.com/photos/joanna8555/4011403215/

Chicken pox

http://w

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axsons/2849159830/

VECTOR

http://www.flickr.com/photos/imortal/3707897327

Vaccine

http://www.flickr.com/photos/andresrueda/2983149263

Bacteria

http://www.flickr.com/photos/kaibara/2234750993

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Virus

http://www.flickr.com/photos/36128932@N03/3338845735

Sore throathtt

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/photos/badlyricpolice/2209477536

Infection

http://www.flickr.com/photos/chrstphre/1862878322