Related: Infectious diseases

1. Infectious diseases
   1. H7N9 bird flu spreads much like ordinary flu
   2. Mystery illness strikes 7 in Ala.; 2 dead
   3. New SARS cousin finally has a name : MERS
   4. SARS-like virus spreads to health workers
   5. CDC: 2012 was deadliest year for West Nile in US
2. Top health stories
   1. This is your brain on happy: Machine can read your emotions
   2. New Middle East virus spread in hospitals
   3. AMA supports use of sunscreen in schools
   4. HPV infections fell by half in teen girls after vaccine, study shows
   5. FDA backs away from new fecal transplant rules
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      New challenge from NFL player: encouraging better health care practices