Merck Will Help Make J&J’s COVID-19 Shots After Its Own Vaccine Fails

AURORA, CO – DECEMBER 15: (EDITORIAL USE ONLY) Rocky Mountain Regional VA Medical Center investigational pharmacy technician Sara Berech prepares a dose of the Johnson & Johnson COVID-19 vaccine for a clinical trial on December 15, 2020 in Aurora, Colorado. The Johnson & Johnson vaccine could be submitted for emergency use by late January and is the only vaccine among leading candidates given as a single dose. (Photo by Michael Ciaglo/Getty Images) Michael Ciaglo/Getty Images

Merck, one of the largest vaccine makers in the U.S., failed to develop its own COVID-19 vaccine. Now, through an unusual partnership, it will help manufacture Johnson & Johnson’s newly authorized coronavirus shots to boost vaccine supply in the U.S.

The Biden administration is expected to announce the partnership Tuesday, multiple senior White House officials told The Washington Post.

The officials said the administration had been scouring the country for additional manufacturing capacity after they learned that J&J had fallen behind in vaccine production.

J&J’s single-dose COVID-19 vaccine received the FDA’s emergency use authorization on Saturday. The first batch of four million shots was shipped on Monday.

Under the agreement, Merck will dedicate two U.S. facilities to making J&J’s shots. One facility will manufacture doses, while the other will provide final “fill-finish” work to get the shots ready for distribution. The arrangement, according to White House officials, can increase J&J’s supply by as much as 100 percent.

See Also: Comparing Johnson & Johnson’s Vaccine With Moderna, Pfizer’s Now That It’s Approved

However, the impact won’t kick in right away as it could take Merck several months to get its factories ready for production. The manufacturing itself will take another three to four months.

Merck was a late entrant in the race to develop a COVID-19 vaccine. The pharma giant announced studies of two vaccine candidates last May. But by January, both experiments were declared failures after phase 1 clinical trials flopped. Merck announced on January 25 that it was halting vaccine work.

Since then, Merck has expressed its interest in helping competitors ramp up vaccine supply. “We are in regular conversation with governments, we’re in regular conversations with the public health authorities, with the foremost experts on all this,” Merck’s chief marketing officer Michael T. Nally told The New York Times in early February.

Merck has more than a century of expertise in making vaccines. In the U.S., it’s the sole provider of the combination childhood vaccine that protects against measles, mumps and rubella. It also developed an Ebola vaccine, which won FDA approval in 2019.