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Coronavirus briefing: what happened today


There could be heated debate about two reports released today on Johnson & Johnson vaccine What and how to offer additional shots to Americans receiving company shots.

initial data from a federal clinical trial suggests that the 15 million Americans who received J.&J. The vaccine may get better with the Moderna or Pfizer booster shot. Adding to the matter, an FDA analysis published earlier in the day questioned whether Johnson & Johnson had sufficient evidence in its application for booster shots.

Now the question is whether J.&J should be authorized. Booster heads the FDA’s advisory panel, which will meet Friday to vote on whether to authorize the company’s application.

In a federal clinical trial, researchers at the National Institutes of Health mixed and matched vaccine doses to test their effectiveness. He found that:

  • People who got J.&J. The shot and a modern booster saw his antibody levels increase 76-fold within 15 days.

  • People who got J.&J. Shot and Pfizer boosters saw a 35-fold increase.

  • Give the people J.&J. Shots only saw a fourfold increase.

The authors cautioned about the small size of the study and said they did not follow the volunteers long enough to identify rare side effects.

They also had a narrower focus: The researchers only looked for antibodies that can stop the coronavirus from replicating, but they did not examine how well the booster trains immune cells to recognize and kill infected cells.

Despite questions about the strength of J&K. Booster, some experts speculated that the agency would clear the shots anyway to meet public demand. Once the agency authorized a booster from Pfizer-BioNtech last month, “the die was cast,” said John Moore, a virologist at Weill Cornell Medicine.

FDA discussion this week at J&J. The vaccine will have major implications for the future of the shot in the US, said Jason Schwartz, an associate professor of health policy at the Yale School of Public Health. If the FDA recommends that people who have had J.&J. Vaccine follow-up with a different booster shot, he said, “It is difficult to see what will bring people to J&K. Vaccine.”


Biden administration will lift travel restrictions at borders with Canada and Mexico Starting November for fully vaccinated travelersHowever, the officials did not specify the exact date.

along with previously announced Restrictions on foreigners coming by air eased, which also begins in November, marks the effectively reopening of the US to travelers and tourism – a new phase in the recovery after the country closed its borders for nearly 19 months.

Officials said restrictions on unvaccinated travelers crossing Mexican or Canadian borders would continue. While those traveling by air will need to show both proof of vaccination and a negative coronavirus test to enter, no test will be required for those crossing land borders.

The CDC recommends people fully vaccinate two weeks after receiving a second dose of Pfizer-BioEntech or Moderna Vaccines, or a single dose of Johnson & Johnson. People who have received vaccines listed by the WHO for emergency use, such as AstraZeneca, would also be considered fully vaccinated – a standard that a senior official said would probably be applied to those crossing the land border.

Many Mexicans have received vaccines that do not have WHO authorization, such as the Sputnik V developed in Russia, or the CanSino vaccine from China. Mexican President Andres Manuel López Obrador said on Wednesday that he would pressure the WHO to authorize them soon.



I bought a new mat for the front door that says, “Welk – wait, are you vaccinated?” I have young children, and a former person who has COPD. Showing your freedom at the cost of human life? Please show it some other way.

Jane Bolden, Santa Ynez Valley, Calif.

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