All immigrants arriving at Ellis Island had to undergo a
medical inspection Medical officers screened immigrants
for any indication of physical or mental illness. If illness
was suspected, immigrants were detained at Ellis Island's
hospital complex. In some cases, the incurable or
extremely ill were sent back to their home countries. In
total, approximately 3.500 immigrants died at Ellis
Island - 1,400 being children.
"Hayter Family,"
National Park Service

What happened when immigrants were seriously ill or
unable to be cured?

They had to stay at Ellis Island.

They were not allowed into the country.

They had to go through another exam.

They were unlikely to live.