This is a Johns Hopkins Degree Certificate in Virology and Microbiology granted to Dr. Robert Neville used in the 2008 Will Smith sci-fi film I Am Legend.
The certificate was used to decorate Dr. Robert Neville's (Will Smith) office.
It can be easily screen seen thanks to the text pattern and unique font this Certificate uses on top, as only a dozen of certificates of all kind (medical mainly but some related to the Army too) were made.
The certificate is from the Johns Hopkins University, and has Neville listed as "Dr. Robert Neville MD PhD". Comes framed behind glass in a real wood frame (intentional blurring on some parts has been applied to avoid faithful replication).
COA: Prop Store of London
Will Smith as Dr. Robert Neville being attacked by mutant vampire boss in his office. The Certificate can easily be recognized.