I had the same thought as Ohm...it's possible the
Post# of 148235
1) JE Estrada posts daily FB updates on his father's condition. Quite a few of his followers have left comments on each update, but not that many likes or anything crazy.
2) JE Estrada's response to Jennifer Burke's leronlimab question has over 250 likes right now, mostly from complete strangers/non-Filipinos.
3) Estrada sees that and says to himself, "Hmm, maybe I should look into this leronlimab."
4) Jennifer Burke posts another comment wishing Estrada's father well, to which JE replies "Thank You".
5) Aside from his original updates, those two replies from Estrada to Burke are the only occasions where he's taken the time to type a response.
Just speculating. Nothing against the family, but if you do a little research, you'll find the Estrada's are infamous for their financial "escapades".