### 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: According to health officials, Gauteng saw a 400 % increase in new cases identified in the first week of December, and tests show that the Omicron variant accounts for more than 90% of cases.
### Errors: There is a minor error of incorrect translation has stylistic problems at "health officials instead of health officials stated". There is a minor error of incorrect translation is missing content from the correct translation at "tests show instead of test results show".

### 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%.