New York – Here’s an assignment to humble even the most confident doctor: Assess a patient’s condition before millions of people without being able to examine him or see a complete medical chart.

That, in effect, is what medical experts at news organizations have been asked to do since President Donald Trump revealed Friday that he had tested positive for COVID-19.

They have a fine line to walk, needing to decide what level of speculation – if any – that they’re comfortable with, how much to read into medications the president has been prescribed and how to explain the course of a virus so new that it still confounds the people who study it.

“You try to put the pieces of the puzzle