Brazil at the Olympics This marked the first time that any country in South America has hosted the games. This also marks the first time that a lusophone country hosted any edition of the Olympic Games. Rio was only the second city in Latin America to host the Summer Olympics, after Mexico City in 1968, and Brazil was only the second country of the southern hemisphere to host the Olympics, after Australia in 1956 and 2000. Brazil has never hosted a winter edition of the Olympic Games. Brazil has hosted the Games on one occasion. According to official data of the International Olympic Committee,
Doping at the Olympic Games effort to detect banned substances and recent blood transfusions. While several athletes were barred from competition by their National Olympic Committees prior to the Games, six athletes failed drug tests while in competition in Beijing. What follows is a list of all the athletes that have tested positive for a banned substance either during or after an Olympic Games in which they competed. Any medals listed were revoked by the International Olympic Commission (IOC). In 1967 the IOC banned the use of performance-enhancing drugs, instituted a Medical Commission, and created a list of banned substances. Mandatory testing began at the