Do J&J vaccine takers need boosters? What we know about mixing shots


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  • Some people who have received the J&J vaccine look for mRNA booster shots.
  • The CDC and FDA don’t recommend mixing vaccines, but experts say it can’t hurt.
  • Early data on the vaccine mix suggests it may trigger a stronger immune response.
  • See more stories on the Insider business page.

As the Delta variant becomes the dominant COVID strain in the United States, Americans are scrambling to strengthen their protections against the coronavirus.

For some people who have received the Johnson & Johnson single dose vaccine, this means getting another injection just in case.

However, the FDA and CDC have not recommended doing so. Infectious disease expert Dr Anthony Fauci said there was no data to back it up yet.

“Even if individual doctors would do this, based on a clinical trial, there is no fundamental scientific reason to do so at this time,” Fauci said when asked about J&J boosters. during a press briefing at the White House. “When this data becomes available, you will see the recommendations change.”

J&J data suggests shooting is effective against variants

Public perception of the J&J vaccine has been marred by concerns about blood clots and the manufacture of snafus. But from a practical standpoint, the vaccine works.

J&J opposed some disturbing variants, including the highly transmissible Delta variant.

Company found that its vaccine produced a ‘strong’ antibody response to variants, according to two pups, yet to be peer reviewed studies. He concluded that recipients of the J&J vaccine do not need a booster – and, for now, the CDC agrees.

“At this time, we have no information to suggest that you need a second shot after J&J, even with the Delta variant,” said CDC director Rochelle Walensky. Today.

Some people get extra hits anyway

Some people are still looking for boosters. Some public health experts are among those who “supplement” their J&J vaccines with a dose of Pfizer or Moderna.

Angela Rasmussen, virologist at the University of Saskatchewan, tweeted Tuesday that she received a dose of the Pfizer vaccine to supplement the J&J vaccine she received in April. She said she was boosted by the Delta variant and the history of successful vaccine recalls before COVID-19.

Other virus experts agree that, in general, the strategy of mixing different types of vaccines to enhance protection against disease may work well.

“You would expect some combinations to be: safe first and give – at a minimum – comparable and most likely better than some of the standard two-dose regimens,” said immunologist John Moore to Insider.

The data from the first studies on the mixture of vaccines are promising. A recent study in the UK suggests that mixing the Pfizer and AstraZeneca vaccines gives a stronger immune response than two doses of AstraZeneca vaccine.

Another study in Spain found that mixing doses successfully produced an enhanced immune response. However, the study has not yet been peer reviewed and these preliminary results were announced in an online presentation.

Getting a recall in the United States can be logistically difficult

Twitter users who had already decided to get mRNA vaccinated to track their dose of J&J had it logistics issues on how to get vaccinated when you are already technically vaccinated.

Amazon COVID-19 chief medical officer Dr Vin Gupta tweeted a response.

“If you’ve been given the J&J at 1 dose, go get 1 dose of Pfizer or Moderna as a ‘booster’ when you can,” he wrote. “Most of the people I know who have J&J do it and tell others the same thing – since two looks better than 1 st: delta.”

Christopher Murray, director of IHME, told Insider he believes following up with an mRNA injection will soon become a “smart strategy” for those who got the J&J jab – especially teachers considering the next one. school year.

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