You are not ill, but you are afraid of contracting the Covid-19 virus at your destination and therefore you want to cancel your trip.
You will need to contact your tour operator, carrier and/or accommodation provider to request cancellation, modification or postponement of the trip. Indeed, in the event of a negative travel advice and in accordance with the legislation, travel agents must allow their clients to cancel their trip free of charge if it is affected by exceptional circumstances (such as an epidemic). The same applies if you have to travel to an area without an epidemiological risk, but with a stopover in an area considered a risk by the local health authorities for the Covid-19.
For high-risk zones, only zones or areas for which the FPS Foreign Affairs has issued a negative travel advice regarding the Covid-19 at the time the trip is undertaken and on condition that this advice was issued after the date of the trip reservation are considered