A female guest and male staffer received head injuries and were transported to a hospital following an incident involving the Pinfari Zyklon roller coaster. Source
Accidents
Theme parks and roller coasters are statistically very, very, very safe. Out of the millions of people who ride the thousands of rides every year, there are only a small handful of incidents. You are statistically more likely to be involved in an accident driving to an amusement park than having one at a park. The rarity of accidents is one reason why the media report them, similar to plane crashes.
Every important element of a ride is inspected on a regular basis and every ride is tested every day without passengers before it opens. A ride might not open, or a safety system might activate, if there is an imperfection. For theme parks to operate, they must obtain insurance and one stipulation is their rides are frequently inspected and signed off by a strict Health & Safety governing body. Every theme park does what they can to prevent accidents because the negative press would be bad for business.
Having said all that, theme park accidents still happen…
Jetline, Grona Lund, Stockholm, Sweden
A woman in her 30s died and nine others were injured, including three children, after one of the Schwarzkopf/Zierer roller coaster trains derailed. Source
Yomis-Zauberwelt der Diamanten, Europa Park, Rust, Germany
A massive broke fire out at Germany’s largest theme park, completely destroying the Yomi’s Magic World of Diamonds attraction. The Alpenexpress Enzian Mack Rides powered roller coaster also sustained damage from the blaze. Source
Xcaret, Playa del Carmen, Mexico
Paramedics retrieved an elderly man from the water park’s pool when he began to drown and sustained cardiac arrest, taking him to a local hospital where he was declared deceased. Source (in Spanish)
Break Dance, Fronleichnamskirmes, Oberhausen, Germany
A 17-year-old boy, who was the son of the attraction’s owner, died while collecting tickets when a ride gondola struck him. Paramedics also attended to 20 people who sustained minor injuries or shock following the incident. Source (in German)
Sky Swinger, Wonders Park, Navi Mumbai, India
Six people were injured after a safety harness on the wave swinger style ride broke. Four of the guests involved were transported to a hospital, including one who sustained a fracture. Source
Wave Swinger, Park Topolya, Orenburg, Russia
Twenty people sustained injuries after the flying carousel collapsed at the amusement park. Source (in Spanish)
Crazy Fabrik, Foire du Trone, Paris, France
A 4-year-old boy sustained severe injuries after catching his hand in the treadmill of the carnival’s fun house. The boy suffered nerve and artery damage and could lose a finger, according to his family. Source (in French)
Fantasmic, Disneyland, Anaheim, California
Spectators at the popular show got a shock when the feature’s fire-breathing animatronic dragon burst into flames. No injuries were reported. Source
Toos-Express, Toverland, Sevenum, Netherlands
A 38-year-old woman sustained injuries after falling from the Vekoma Junior Coaster platform, dropping 8 feet (2.5 m). Paramedics transported the woman to a local hospital, where doctors determined she’d broken her lower vertebrae. Source (in Dutch)