Here’s the article:
“It is interesting to note, however, that, apparently in response to the new reality, the OU’s policy, as told to this author, is now to rely upon the Pri Chodosh.”
As the article admits, no official OU statement of this can be found on the web, but I don’t see why he would lie. This is a bigger and frankly more interesting discussion than how it pertains to anti-vaxxers, which was kind of silly to begin with.