Although Adele made a bit of a comeback with her Grammy performance and did amazing at it she is still not feeling 100%. She has been ordered by her doctors not to strain her voice and she will not be going on tour anytime soon.
Her vocal cords may be permanently damaged and Adele and the doctors don’t want to take any chances totally ruining them. She can do a few shows here and there but a tour is simply out of the question.
Hopefully she will come back and fully recover soon!