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Sanofi, GSK COVID vaccine shows strong immune response in phase 2 trials

Sanofi and GSK announcedthis morning their COVID-19 vaccine candidate demonstrated a strong immune response in adults in a phase 2 clinical trial.

Why it matters: Sanofi and GSK say their recombinant protein-based vaccine candidate could ultimately serve as a universal COVID-19 vaccine booster, able to boost immunity regardless of the vaccination first received.


Details: Sanofi and GSK said the vaccine triggered an antibody response in 95% to 100% of all the trial participants, ages 18 to 95, who got the vaccine.

  • The companies also observed a "high immune response after a single dose in patients" who previously recovered from COVID-19, which shows the vaccine has strong booster potential.
  • It's a promising development after the companies had to delay their vaccine in December to improve immune response in older adults. Still, it's also important to point out this is a phase 2 clinical trial, a relatively small study with 722 volunteers in the U.S. and Honduras.

A global Phase 3 trial with more than 35,000 participants from various countries is expected to start in the coming weeks to test the efficacy of two vaccine formulations against variants, officials said.

  • In parallel, the companies also plan to conduct booster studies.
  • Should the candidate prove successful in clearing Phase 3 testing and other regulatory hurdles, officials said a vaccine could be approved by the end of 2021.

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Biden order: End the monopoly game

President Biden wants to remake the U.S. economy by injecting more competition into highly concentrated industries including airlines, Big Tech and agriculture to improve choices and prices for consumers.

Why it matters: The ambitious executive order signed Friday directs the federal government to step up antitrust enforcement and regulation. The move marks a sea change from four decades of a hands-off-big-business approach ushered in by Ronald Reagan.

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Data: Proyecto Inventario; Map: Will Chase/Axios

Sara Naranjo, 88, took to Cuba's streets this past week because she is "done with being hungry, unemployed, without water, without power." Naranjo is one of thousands of Cubans to take part in what activists said were the largest anti-government protests on the island in decades.

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