Three vaccinated U.S. Senators reported coronavirus infections on Thursday, adding to the growing number of breakthrough cases among American politicians. The positive tests were announced by Sen. Roger Wicker, of Mississippi, Sen. Angus King, of Maine, and Sen. John Hickenlooper, of Colorado. “Senator Wicker is fully vaccinated against COVID-19, is in good health and is…  read on >  read on >

A decision on booster shots for the approximately 13.8 million Americans who received Johnson & Johnson’s single-shot coronavirus vaccine is likely to take weeks, according to people familiar with the issue. Federal health officials are waiting on results from a government-backed clinical trial and from studies by Johnson & Johnson to determine whether those who…  read on >  read on >

If you’re pregnant and worried that getting a COVID-19 vaccine might trigger severe side effects, you can relax. New research shows that pregnant women and new mothers don’t suffer more reactions after a shot than other women do. “Pregnant people do well with the vaccine,” said lead study author Dr. Alisa Kachikis, an assistant professor…  read on >  read on >

The United States’ early rollout of COVID-19 vaccinations may have saved nearly 140,000 lives, a new study suggests. Using data on state vaccination campaigns and COVID-19 deaths, researchers estimate that immunizations prevented 139,393 deaths nationwide between December 2020 and early May 2021. On the state level, vaccinations prevented an average of five deaths for every…  read on >  read on >

Antibodies generated by COVID-19 vaccines are effective against the Delta variant and other coronavirus variants of concern, new research shows. The findings may help explain why most vaccinated people have avoided the surge of Delta variant cases sweeping across the United States. “In face of vaccination, Delta is relatively a wimpy virus,” said study co-author…  read on >  read on >