The Wikipedia article says 22 of the 36 became pregnant with a fellow crew member during the deployment. All of them had to be transferred off the ship so they could be closer to an obstetrician in case of complications.
I think you might have misread that, it says 22 with a fellow crewmember or while on shore leave in Hawaii/Philippines/Singapore/Thailand/other ports (and the source [1] doesn't mention crewmembers but it's implied).