A lifeboat with five crew members in it fell from the Harmony of the Seas, while docked in Marseille, reportedly tumbling 10 metres from the ship's fifth deck.
A spokesman said Kerry, who has called off the rest of his four-state tour, suffered a broken leg.
The boy, on a family skiing holiday in Flaines near the Swiss border, apparently became lost on a piste before falling over a rock formation.
Most of the 41 injured, seven of whom are in a serious condition, were pensioners from the town of Ouistreham in Normandy.
After the derailment in Drancy, just north of Paris, a fire service official said radiological tests found no leaks.
Ruling comes two years after another French court fined the airline and held it criminally responsible for the 2000 crash which killed 113.
The French governement said a steam leak at France's oldest nuclear plant, in which two workers sustained injuries, posed no risk.
Former French prime minister François Fillon breaks his foot in a moped accident while holidaying on Capri, Italy, with Ferrari's chairman.