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.

Top U.S. infectious disease expert Dr. Anthony Fauci said on Sept. 5 that officials were likely to soon get the regulatory go-ahead to administer Covid-19 vaccine booster shots made by Pfizer, although the Moderna booster could take a little longer.

A White House plan to offer Covid-19 booster shots will most likely start during September only with the vaccine made by Pfizer and BioNTech, a narrower initiative than anticipated, a source familiar with the matter said on Sept. 3.

Top U.S. health officials told the White House they may not have enough data to recommend Covid-19 booster shots for the wider general public by late September as President Joe Biden had anticipated, the New York Times reported on Sept. 3.

A study published in The Lancet Infectious Diseases found that the Pfizer-BioNTech, Oxford-AstraZeneca or Moderna vaccines resulted in a drop in “long-haul” Covid-19 by 50 percent. According to data collected by the American Academy of Pediatrics (AAP), more than 500,000 children tested positive in the United States for Covid-19 from August 5 to August 26.

A study published in the Journal of the American Medical Association by Belgium researchers comparing the Moderna and Pfizer-BioNTech Covid-19 vaccines found that the Moderna jabs generated twice the antibodies as the Pfizer-BioNTech vaccine.

An advisory panel to the U.S. Centers for Disease Control and Prevention (CDC) on Aug. 30 unanimously recommended the Pfizer Inc. and BioNTech SE Covid-19 vaccine for people age 16 and older, an important step that could help accelerate vaccine mandates in the United States.

The Covid-19 variant C.1.2., which was first detected in South Africa in May 2021, is causing public health experts worldwide to keep an eye out for its presence as it seems to be more infectious and even more resistant to vaccines than other variants.

Dr. Anthony Fauci, the top U.S. infectious disease expert, said on Aug. 29 he supports Covid-19 vaccine mandates for children attending schools as the highly contagious Delta variant of the coronavirus continues to fuel a surge in cases in the nation.

In line with growing concerns that certain Covid-19 vaccines are causing unusual blood clotting problems, a group of scientists from the U.K. conducted a massive study on the link between vaccinations and dropping platelet counts and found that the problem lies more on the virus itself than on the medications.