There is one more point here. And that is, information stated here is OPEN for posterity, FOR EVERYONE to read, not only parties involved. That puts the Sha’alo into in entire perspective. So both sides of the coin HAVE TO BE EXAMINED. At times on IS MECHUYAV to act, other times one is forbidden. How to go about it is also an issue. A competent Rav, knowlegable in these Halachos, should be sought.
And OOMIS, I wouldn’t rush without the advise of a Rav. Stakes are high. On one hand were dealing with the possible danger, the health and well-being of one person. On the other it’s one’s entire livelihood – reputation on the line. Information must be sorted out from rumors, hearsay. First hand or second. Notify directly or in the open blog. These are indeed weighty issues. For a competent Rav.