From the WashPost: Puerto Rico earthquake aftershocks again rattle coastline as residents deal with disaster after disaster.  An excerpt:

The fallout from the worst disaster in Puerto Rico’s history and last summer’s political convulsions that resulted in upheaval and the ouster of a governor has left a population traumatized and distrustful of government at all levels. The hurricane, the resultant struggle for survival, the unsettled governance and now days of strong quakes have deteriorated the emotional and mental health of some of the poorest and most vulnerable citizens of the United States.

From USAToday, this article: 950 earthquakes have hit Puerto Rico so far this year. Why? Blame it on an ‘earthquake swarm’