Welcome
editHello Hanguyen15 and welcome to Wikipedia! We appreciate encyclopedic contributions, but some of your contributions, such as the ones to Zoonosis, do not conform to our policies. For more information on this, see Wikipedia's policies on vandalism and limits on acceptable additions. If you'd like to experiment with the wiki's syntax, please do so in the sandbox (but beware that the contents of the sandbox are deleted frequently) rather than in articles.
If you still have questions, there is a Help desk, or you can to ask for help on your talk page, and a volunteer should respond shortly. You may also find the following pages useful for a general introduction to Wikipedia.
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I hope you enjoy editing and being a Wikipedian! Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. Feel free to write a note on the bottom of my talk page if you want to get in touch with me. Again, welcome! Hadal (talk) 14:25, 8 June 2023 (UTC)
Note: I've removed the copy/pasted text you added to zoonosis because the info was already present in the article under the "Causes" section. Note that while in this instance the text you copied is in the public domain (because it is from the CDC), in most cases you should not be copy/pasting text into Wikipedia from other sources. This will almost always result in a copyright violation You should instead use the sources as references, and use your own words to add the info to the article. See Help:Referencing for beginners. Thanks. --Hadal (talk) 14:25, 8 June 2023 (UTC)