Can someone help me understand the line highlighted in yellow. What does "at risk" mean?
Health Screening and Illness Surveillance Procedures Under Consideration:
All guests and crew embarking a ship will undergo enhanced pre-embarkation health screening in accordance with prevailing health best practices, such as health questionnaires and touch-free temperature checks as appropriate
Those identified at risk will undergo an additional health evaluation by medical staff
Health checks as appropriate during the cruise for guests and crew
Rapid response and contact tracing plans in case of on-board illness