Big Brother' cast change: Christie Valdiserri tests positive for
Big Brother warns viewers to always expect the unexpected, but no one probably expected a cast change already -- as Christie Valdiserri has been dropped from the cast and replaced due to a positive COVID-19 test result.
Big Brother OK! Magazine
Big Brother's Christie Valdiserri Tests Positive for COVID Before Premiere
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Big Brother' Season 23 Cast Member Tests Positive for COVID-19 Ahead of Premiere