Well, just seen this mod today and tested it. Found on https://7daystodiemods.com/avoid-bloodmoon-injection-sp-mp-dedicated/
I have a dedicated server and hosted server, and it works on both. Current game at A20.7(b1)
You need to use it before 22:00 or it won't work. (I tested at 21:59 no problem, at 22:00 and they will find you) You NEED to use it before 22:00....
It states 20 minutes of use, yet at 4:15 I still had over 1 minute of protection left. This might work if a server extends bloodmoon to 06:00, not sure as I didn't test that. Thanks for the mod, hope it continues, if not, maybe you'll update it since it uses a DLL file.
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EDIT:
I edited this since I forgot to mention (and assure people, this was tested on multiplayer only in case people don't understand dedicated and hosted server) Did another test, it will last from 21:59 till 04:56. Not good for servers running bloodmoon till 06:00 in my opinion (yet not tested if using two injections at once helps) I tested with my player at level 109 and at level 1000 (Yes, a mod to increase level yet hosted server at default 300 to prevent issues with testing). I personally will change the recipe for making it, yet overall great job!
Thanks again at w00kien00kie !!