75 percent of adults in the United States have received at least one dose of a Covid-19 vaccine as of the morning of Sept. 7, the U.S. Centers for Disease Control and Prevention said.

Former British prime minister Gordon Brown accused rich countries of committing a “moral outrage” by stockpiling Covid-19 doses while poor countries struggle to get supplies.

The United States administered 351,400,930 doses of Covid-19 vaccines in the country as of the morning of Aug. 8 and distributed 407,561,705 doses, the U.S. Centers for Disease Control and Prevention said.

Combining AstraZeneca’s Covid-19 vaccine with a second dose from either Pfizer-BioNTech or Moderna’s jab provides “good protection”, Denmark’s State Serum Institute said on Aug. 2.

Pfizer Inc. on July 28 raised the 2021 sales forecast for the company’s Covid-19 vaccine by 29 percent to $33.5 billion, and said the drugmaker believes people will need a third dose of the shot developed with German partner BioNTech to keep protection against the virus high.

Two doses of Pfizer or AstraZeneca’s Covid-19 vaccine are nearly as effective against the highly transmissible Delta coronavirus variant as they are against the previously dominant Alpha variant, a study published on July 21 showed.

The U.S. Food and Drug Administration said Johnson & Johnson must throw away millions of doses of the company’s Covid-19 vaccine that were manufactured at a problem-plagued Baltimore factory, but also cleared millions for use.

The United States will continue to press for a waiver of intellectual property rights for Covid-19 vaccines and treatments even as it and other Group of Seven rich nations sharply expand donations of vaccines to poorer countries.

Johnson & Johnson said on June 10 the U.S. Food and Drug Administration extended the shelf life of the company’s single-shot Covid-19 vaccine from three months to four-and-a-half months, as millions of unused doses nationwide near expiration.

The Biden administration plans to donate 500 million Pfizer coronavirus vaccine doses to nearly 100 countries over the next two years, three sources familiar with the matter told Reuters on June 9.