Here are a few options for the description of the WordPress post tag “COVID-19” in Traditional Chinese, with different tones and levels of detail:

**Option 1 (Concise and Direct):**

* **Title:** COVID-19 (新型冠狀病毒肺炎) – COVID-19 (新型冠状病毒肺炎)
* **Description:** 有關新型冠狀病毒肺炎 (COVID-19) 的文章 – Articles related to the Novel Coronavirus Disease (COVID-19).

This option is short, clear, and directly relates the tag to the actual disease. The bracketed content explains the Traditional Chinese equivalent.

**Option 2 (Slightly More Explanatory):**

* **Title:** COVID-19 (新型冠狀病毒肺炎) – COVID-19 (新型冠状病毒肺炎)
* **Description:** 收集有關 2019 冠狀病毒疾病 (COVID-19) 的新聞、資訊、及分析文章。 – Collection of news, information, and analysis articles on the 2019 Coronavirus Disease (COVID-19).

This option is a little more descriptive, signaling the type of content that can be found under the tag. Also the Traditional Chinese equivalent appears in the description.

**Option 3 (Emphasis on Impact and Concerns):**

* **Title:** COVID-19 (新型冠狀病毒肺炎) – COVID-19 (新型冠状病毒肺炎)
* **Description:** 涵蓋新型冠狀病毒肺炎 (COVID-19) 的疫情發展、防治措施、社會影響等相關主題。 – Covering topics such as the development and spread of the Novel Coronavirus Disease (COVID-19), preventative measures, and societal impacts.

This is more detailed, making it clear what kinds of posts will be categorized under this tag. Again, the Traditional Chinese term is explained.

**Option 4 (For a Health-Focused Blog):**

* **Title:** COVID-19 (新型冠狀病毒肺炎) – COVID-19 (新型冠状病毒肺炎)
* **Description:** 有關 COVID-19 疫情的最新消息、預防指南、以及個人健康建議。 從病毒傳播途徑到疫苗接種資訊，助您了解如何保護自己和家人。 – The latest news regarding the COVID-19 pandemic, prevention guidelines, and personal health advice. Includes information on the virus’s transmission paths to vaccination information, helping you to understand how to protect yourself and your family.

This is aimed at a health-conscious audience, providing valuable extra information.

**Key Considerations for Choosing the Best Description:**

* **Your Blog’s Tone:** Is your blog formal or informal? Does it aim to inform, educate, or offer personal insights?
* **Your Target Audience:** Are you writing for a general audience, or are you targeting a specific demographic?
* **Content Focus:** What types of articles will you be tagging with “COVID-19”?

Choose the description that best fits your blog’s style and content theme. Remember to also ensure your posts about COVID-19 are carefully fact-checked, especially when it comes to medical information.