### 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 per cent increase in new cases in the first week of December, according to health officials, with tests showing the Omicron variant accounted for more than 90 per cent of cases.
### Errors: There is a minor error of word choice at "health officials instead of health officials".

### 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%.