Previous submission of the tweets in German here: <a href="https://news.ycombinator.com/item?id=29892505" rel="nofollow">https://news.ycombinator.com/item?id=29892505</a>
The twitter thread as a blog post: <a href="https://zerforschung.org/posts/djokovic-pcr-test-en/" rel="nofollow">https://zerforschung.org/posts/djokovic-pcr-test-en/</a>