The 20-year old addressed his positive test result on his Instagram story urging people to take the virus seriously. 

"In all honesty continue to wash your hands and sanitize," he said on Wednesday night. "It is a terrible thing to have.

"I know we all f****** make fun of it and stuff like that but it is a real thing, so yeah, continue to wash your hands and sanitize." 

Theoharous has played six games for Borussia Mönchengladbach reserve team this season scoring twice. 

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This Socceroo had fame at Liverpool. But he found 'family' in Seattle

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'Complete disaster': Muscat in Belgian relegation danger

Former Socceroo and A-League Melbourne Victory legend Kevin Muscat is under pressure in Belgium after Sint Truidense slumped to 16th place after their eighth match without a win.

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Single NPL club loses 10 players to A-League teams

A-League clubs Western Sydney Wanderers, Sydney FC and Macarthur Bulls have signed a whopping 10 players from storied NPL NSW club Marconi Stallions.