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COUSHATTA, LA - NOVEMBER 11: Adam Youngblood, 17, grimaces as his ears are examined by Dr. Robert Hernandez during Youngblood's visit to the Christus Coushatta Rural Health Center November 11, 2003 in Coushatta, Louisiana. Youngblood is among hundreds of students from the Red River Parish School District suffering from flu-like symptoms. An influenza outbreak prompted the closing of the Red River schools for five days and sent hundreds of families to the health center for treatment of fevers, coughing and headaches. (Photo by Mario Villafuerte/Getty Images)

COUSHATTA, LA - NOVEMBER 11:  Adam Youngblood, 17, grimaces as his ears are examined by Dr. Robert Hernandez during Youngblood's visit to the Christus Coushatta Rural Health Center November 11, 2003 in Coushatta, Louisiana. Youngblood is among hundreds of students from the Red River Parish School District suffering from flu-like symptoms. An influenza outbreak prompted the closing of the Red River schools for five  days and sent hundreds of families to the health center  for treatment of fevers, coughing and headaches.  (Photo by Mario Villafuerte/Getty Images)