### Chinese: 据卫生官员介绍，豪登省在12月的第一周发现的新病例增加了400 % ， 测试显示，奥密克戎变体的病例占90%以上。
### English: Gauteng saw a 400 percent increase in new cases identified in the first week of December, with tests showing the omicrone variant comprising more than 90 percent of cases, according to health officials.
### Errors: There is a minor error of incorrect translation has stylistic problems at "Gauteng saw a 400 percent increase". There is a minor error of incorrect spelling or capitalization at "omicrone variant".

### Improved English: According to introduction from health officials, the new cases detected in Gauteng province in the first week of December increased by 400%; according to test results, Omicron variant cases accounted for more than 90%.