None of the identified passengers from the case’s
flight developed symptoms; to date, there had been no
documented cases infected with MERS on board aircraft.8
However, the contact tracing of flight passengers is
recommended. The European Centre for Disease Control
recommends tracing the entire plane or at least seven
rows on either side of the case;9 tracing those within two
rows of a case was recommended by WHO for MERS
case investigations.