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Unvaccinated Americans were 4.5 times more likely than those vaccinated to be infected with the coronavirus, and they were 10 times more likely to be hospitalized and 11 times more likely to die from it, according to one of the few studies highlighting the effectiveness of strokes.

The study looked at more than 600,000 cases of the virus in 13 states, representing about a quarter of the U.S. population, between April and July, and found that people who were not fully vaccinated were much more susceptible to it. infection and death from the virus.

A day after President Biden issued sweeping vaccine mandates aimed at getting American workers to get vaccinated, federal health officials released the three studies that drew data from different parts of the United States. to assess the protective power of vaccines.

Vaccine protection against hospitalization and death remained strong even when the Delta variant was the dominant form of infection. But the effectiveness of vaccines in preventing infection increased from 91% to 78%, according to the study.

Studies point to a series of similar findings in recent weeks.

“As we’ve shown, study after study, vaccination works,” Dr Rochelle Walensky, director of the Centers for Disease Control and Prevention, said during a White House briefing on Covid on Friday.

Here are some other highlights of the week:

  • A state judge in Washington granted an injunction on Wednesday banning disruptive protests near school campuses after anti-mask protests at a Vancouver city high school in Washington led to a lockdown. The injunction is effective as long as the state-issued mask warrants are in place.

  • Los Angeles is the first major school district in the United States to impose coronavirus vaccines on students 12 and older who attend in-person classes. New York City Mayor Bill de Blasio said the city, which is home to the nation’s largest school district, will not follow Los Angeles’ lead on the mandate to vaccinate students.

  • Sweden bans all non-essential visitors from the United States. The Netherlands says vaccinated travelers should self-isolate after arriving from the United States – and the unvaccinated are not welcome. The restrictions come after the European Union removed the United States from a list of safe countries whose residents can travel without coronavirus testing and quarantine.

  • Unemployment benefits that kept millions of Americans afloat during the pandemic expired on Monday, putting in place the abrupt cut in aid to 7.5 million people as the Delta variant shakes up the pandemic recovery. The Biden administration is in a political fight for benefits and is now banking on further federal aid and a fall hiring resumption to prevent vulnerable families from foreclosures and food lines.

  • More than 40 million cases of coronavirus have been recorded in the United States, according to a New York Times database. The total number of known infections – larger than the population of California, the country’s most populous state – is testament to the spread of the coronavirus, particularly in recent times with the highly contagious Delta variant, and the patchwork efforts of the United States to curb it.