When was the only death linked to drug use following an event at an Olympic Games and who?

Question

The longest winning streak by any nation at an event in the Olympic Games was set by the USA, between 1896 and 1968. What was the event?

Answer 1

1960

A cyclist fell from his bicycle during his race and later died in hospital. A coroner's inquiry found that he was under the influence of amphetamine, which had caused him to lose consciousness during the race.