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Johnson & Johnson vaccine encounters production obstacles



A Johnson & Johnson spokesperson declined to confirm the delay, but said the company was “full of confidence in our ability to fulfill the 2021 supply promise.”

The spokesperson said: “We are still in active discussions with regulatory agencies, including approval and confirmation of our manufacturing process.”

An HHS spokesperson said: “Operation Warp Speed ​​is working with Johnson & Johnson to expand the scale and maximize the production of the Janssen vaccine.” “It is too early to make predictions.”

Moncef Slaoui, co-director of Warp Speed, hinted at a slowdown in production on Monday and told reporters that the company is now expected to receive a “single-digit million”

; dose in the second half of February. He added that by April, the company’s “number will be more.”

The New York Times first reported the production delay.

The Johnson & Johnson vaccine is considered to be critical to accelerating the efforts of the United States to end the pandemic, especially because it only requires a single dose. There is no need to keep the bullets at sub-zero temperature, but a special freezer is needed.

In contrast, the Pfizer and Moderna vaccines currently being distributed require two injections, which complicates the logistics of vaccination for health departments and medical service providers, who must ensure that patients receive the vaccine again.

But the Johnson & Johnson shooting case also used an older method to integrate the genetic information of the coronavirus into a common virus, while Pfizer and Moderna used a new technology that used messenger RNA to send instructions to cells. . Although the mRNA method has not been proven before these products, vaccine experts say it is easy to scale up quickly.


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