Use of the CDC dataset as controls for a non-randomized trial is very problematic. Hard to know what to make of this at all. It has a modicum of bioplausability but I don’t think my posterior probability estimate of effectiveness has changed at all after reading the paper.
I have been doing nasal rinses for a couple of years since I found out I was immunocompromised (CVID) on the recommendation of a Mayo Clinic doctor. It makes sense to me that if they are testing for Covid with nasal swabs because it starts there, then doing regular sinus flushes will help prevent a small exposure from taking root. I use this kit, $9, every time I'm around others like at the store, etc (and still wear masks):
However, if the study was re-run with a control group and found the same results, then the outcome is phenomenal. Ie. Far better than vaccination achieved.
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[ 2.9 ms ] story [ 23.2 ms ] threadhttps://www.amazon.com/NeilMed-100-Sinus-Rinse-Complete/dp/B...
I saw a post here recently from a guy who has been doing nasal rinses since the 70's and hasn't been sick in 50 years!
I did get COVID, but extremely mild. I can only think of one or two times I've felt sick at all in those 10 years.
However, if the study was re-run with a control group and found the same results, then the outcome is phenomenal. Ie. Far better than vaccination achieved.