LONDON—British health minister Sajid Javid on Saturday said he had tested positive for COVID-19, but added that his symptoms were mild. 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 on social media, 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.” Javid tweeted on March 17 that he had received a first shot of Oxford/AstraZeneca’s COVID-19 vaccine, posting a picture of him getting a second dose on May 16. Real-world analysis published by Public Health England has found that two …