This may have little to do with SXM.

There can't have been very many medical evacuations from SXM to Miami. One of the cases listed in St Martin is noted to have been repatriated to his home country. On Saturday 3/28, in the Government of Sint Maarten's "Social Media News Brief" on Facebook, the Prime Minister spoke of an American who arrived in St Martin by boat, and who had tested positive. He had been traveling "all along the Caribbean in the past weeks". He was flown out of SXM on a medevac flight. My recollection is that in either the ARS bulletins, or in a FB post by the Prefecture, he was referred to as being in his 60's.