Three 13-year-old girls were treated for shock after the Vekoma Invertigo coaster stalled nearly 100 feet (30 m) above the ground and about 20 people, mostly middle-school students, were safely evacuated from the ride. Source (in French)
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…
Three 13-year-old girls were treated for shock after the Vekoma Invertigo coaster stalled nearly 100 feet (30 m) above the ground and about 20 people, mostly middle-school students, were safely evacuated from the ride. Source (in French)
Several people sustained injuries Sunday when the park’s train derailed. Paramedics treated five adults and a child for minor injuries on-site and transported one girl to a local hospital for observation. Source (in Spanish)
A 12-year-old boy experienced a medical-related incident outside a pool at the Los Angeles area water park. The boy was rushed to a hospital, where he later died. Authorities did not disclose the nature of the medical aid call. Source
A 38-year-old man was struck in the head by the B&M (Bolliger & Mabillard) inverted coaster and died after entering a restricted area to retrieve his car keys. Source
A 17-year-old male employee was taken to a hospital after being pulled from a pool at the water park. The incident took place when the park was closed to the public. Source
Four people, including an 11-year-old girl, were taken to hospital after the SafeCo (Spain) manufactured Jump N Smile ride malfunctioned at the funfair in Brockwell Park. A man and woman in their 40s were treated for life-threatening injuries, while the child and a man in his 50s sustained minor injuries. Source
A 60-year-old female worker died two days after falling from a golf cart in the backstage area at Disneyland. The employee, who worked as an administrator for Club 33 (the exclusive members-only dining club located above the Pirates of the Caribbean attraction), received a head injury in the fall. Source
Not so much an accident, but a 19-year-old man died after suffering a heart attack while riding the double-loop roller coaster built by Chinese manufacturer Hebei Zhongye Metallurgical Equipment Manufacturing Co.
A 13-year-old girl died after being found unconscious in a pool at the marine-themed park. The girl was rushed to a hospital, where she was later pronounced dead. Source
At least 33 people, including seven children, died in a fire that consumed the four-year-old amusement park that was built in temporary tin roof structures. The vast majority of bodies recovered at the site were charred beyond recognition and DNA samples were taken to identify the victims. The blaze was reportedly caused when welding work was being carried out. Source