Team officials confirmed that agents from the World Anti-doping Agency (WADA) arrived at the camp in Moscow, where all of the athletes had blood taken in the sweeping operation. <img alt="Usain Bolt" src="http://images.mid-day.com/2013/aug/Usain-Bolt.jpg" style="width: 500px; height: 472px;" /> Usain Bolt It wasn&rsquo;t clear if an entire national team had ever before been asked to undergo testing on the eve of a major competition. The Jamaican track and field program has been under increased scrutiny over the last two months after former World 100m record holder Asafa Powell and his training partner Sherone Simpson were among five athletes who tested positive at the Jamaican championships in Kingston in June. Powell and Simpson returned positive tests for oxilofrine, results that came just weeks after two-time Olympic 200m champion Veronica Campbell Brown also returned a positive test in May.u00a0

Probe into 1970s doping report

All 44 athletes on the Jamaican team, including Usain Bolt, were tested on Monday at their Moscow training camp for the athletics World Championships.

Usain Bolt, Jamaican team tested

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Usain Bolt, Jamaican team tested

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