Career
She was removed from the Greek team for the 2012 London Olympics by the Greek Olympic Committee after a tweet she made on Twitter. She competed in the 2009 European Indoor Championships, and went through the qualification round with a jump of 14.47 metres. However, in the final she was injured and failed to register a valid jump.
After taking the bronze medal at the 2009 Mediterranean Games, she competed at the 2009 World Championships without reaching the final round.
During the indoor season of 2011, she competed in the qualifying rounds of the 2011 European Athletics Indoor Championships without reaching the final. Expulsion from 2012 Olympics
Papachristou was to compete in the 2012 Summer Olympics, but was expelled from the Greek team on 25 July 2012 after she posted on her Twitter account a message which has been translated to: "With so many Africans in Greece.. the West Nile mosquitoes will at least eat homemade food!!!" This was in reference to a small outbreak of West Nile virus in Greece that had sickened at least five and killed one person.
The tweet, for which she later apologized for being an unfortunate and tasteless joke, was condemned by the Greek Olympic Committee as contrary to Olympic values and ideals. Post 2012 Olympics
In May 2013, the Greek athletics federation suspended her athletic benefits effective 1/4/2013.
They said that the benefits would be reinstated if she began training with an approved coach and resumed high-level competition.