Javid, who has been health secretary for three weeks, has backed Prime Minister Boris Johnson's plan to scrap all remaining legal coronavirus restrictions from Monday, despite a fresh surge of cases fuelled by the highly transmissible Delta variant.
"This morning I tested positive for COVID," Javid said in a tweet, adding he had taken a rapid lateral flow test, and was awaiting confirmation from a PCR test, which needs processing in a laboratory.
"I'm waiting for my PCR result, but thankfully I have had my jabs and symptoms are mild."