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Associated Press

Nearly two-thirds of players who were involved in head collisions during the 2014 World Cup weren't adequately monitored by qualified health professionals to determine if they should have continued playing, according to an extensive video study published today in the Journal of the American Medical Association.

Why it matters: Concussions — from colliding with another player or repeatedly heading the ball — may structurally change the brain and have long-term effects on brain health and cognition.

The study: Trained reviewers looked at every, single event that involved head contact during all 64 World Cup matches for obvious signs of concussion like disorientation, temporary unconsciousness, or seizure-like movements.

During the 64 World Cup games, 61 players had 81 head collisions in 72 separate events. Health care personnel on the sideline assessed the player in only 15% of the cases. In the remaining instances, 45 players were assessed on the field by other players, referee or personnel on the field, while 21 players received no assessment at all. Shockingly, for players who had three or more signs of an obvious concussion, 86% returned to play during the same game.

The rules: International protocols from the sport's governing bodies say that players who show any features of a head concussion during a World Cup match should be immediately withdrawn and assessed by sideline health care personnel. The study shows that these protocols were largely ignored during the 2014 World Cup.

Go deeper

House passes sweeping election and anti-corruption bill

Photo: Win McNamee via Getty Images

The House voted 220-210Wednesday to pass Democrats' expansive election and anti-corruption bill.

Why it matters: Expanding voting access has been a top priority for Democrats for years, but the House passage of the For the People Act (H.R. 1) comes as states across the country consider legislation to rollback voting access in the aftermath of former President Trump's loss.

Updated 1 hour ago - Politics & Policy

House passes George Floyd Justice in Policing Act

Photo: Stephen Maturen via Getty Images

The House voted 220 to 212 on Wednesday evening to pass a policing bill named for George Floyd, the Black man whose death in Minneapolis last year led to nationwide protests against police brutality and racial injustice.

Why it matters: The legislation overhauls qualified immunity for police officers, bans chokeholds at the federal level, prohibits no-knock warrants in federal drug cases and outlaws racial profiling.

3 hours ago - Politics & Policy

Senate Republicans plan to exact pain before COVID relief vote

Sen. Ron Johnson. Photo: Stefani Reynolds/Bloomberg via Getty Images

Republicans are demanding a full, 600-page bill reading — and painful, multi-hour "vote-a-rama" — as Democrats forge ahead with their plan to pass President Biden's $1.9 trillion COVID-19 relief package.

Why it matters: The procedural war is aimed at forcing Democrats to defend several parts the GOP considers unnecessary and partisan. While the process won't substantially impact the final version of the mammoth bill, it'll provide plenty of ammunition for future campaign messaging.