(Portland, OR)  --  A Portland high school is shutting down its field and other athletic facilities due to an antibiotic-resistant form of staph infection.  OregonLive reports that a student at Wilson High is infected with the disease known as MRSA, or Methicillin-resistant Staphylococcus aureus.  The district learned over the weekend of the infection and called for the affected areas to be disinfected.