The J&J vaccine won praise for its single dosage and because it does not need to be frozen -- unlike the shots from Moderna and Pfizer -- making distribution much simpler.
Moderna has supplied 100 million doses of its vaccine to the United States as of March 29. Pfizer/BioNTech and Johnson & Johnson's shots are the other two vaccines approved in the country.
The shot was also 100% effective in preventing illness among trial participants in South Africa, where a new variant called B1351 is dominant, though the number of those participants was relatively small at 800.
While the new overall efficacy rate of 91.3% is lower than the 95% originally reported in November for its 44,000-person trial, a number of variants have become more prevalent around the world since then.
The FDA approved Ponvory as a daily oral drug to treat relapsing forms of multiple sclerosis, a debilitating neurological condition in which the immune system eats away at the protective covering of nerves.
The at-home COVID-19 testing program uses a rapid antigen test, which offers results within 20 minutes, the bank said, adding the test is awaiting emergency use approval from the US Food and Drug Administration.
Citi said it has offered employees at its Chicago area branches and those working on its trading floors in New York a chance to participate in the home testing program.
The test, Alinity m Resp-4-Plex, can be conducted with one nasal swab sample and can differentiate the coronavirus, flu A, flu B and another respiratory virus called respiratory syncytial virus (RSV), the company said.
Abbott has a range of COVID-19 tests, including antigen, molecular and serology tests which have been authorized for emergency use by the US Food and Drug Administration.
After it receives the recommendation, the FDA is likely to authorize the vaccine for emergency use within a day or so, making it the third available in the United States, and the only one that requires just one shot.
The panel will consider whether the benefits of the vaccine outweigh its risk for use in people aged 18 and older.
In its response, Pfizer said that alternative dosing regimens of its vaccine had not yet been evaluated and that the decision to do that resides with the health authorities.
The authorization includes updated information in the test's instructions for use that addresses variants of the SARS-COV-2 virus, including variants from the U.K. and South Africa.
Our key takeaway is that if the FDA would have wanted to reject the drug, we would have heard the decision by now.
The road to getting a regulatory nod for the drug has been rocky, with the companies scrapping two studies of the therapy in March 2019, and reversing that decision a few months later.
Inmunova director Fernando Goldbaum said the serum helps patients by suppressing viral proliferation, giving the body time to muster its own defensive system.
"However, since the vials are preservative free, it is critical to note that any further remaining product that does not constitute a full dose should not be pooled from multiple vials to create one," the statement added.
The vaccine news helped offset fears from a sharp rise in coronavirus cases globally that has led to a string of renewed lockdowns, including strict measures in California, Germany and South Korea.