Robert Hart, Forbes Staff

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1 In 3 Americans Had Covid By The End Of 2020, Models Estimate—That’s Four Times The Official Count

Researchers estimated more than 60% of people had been infected with the coronavirus by the end of 2020 in areas covering the Dakotas, Minnesota, Wisconsin and Iowa and around half of people in cities like Chicago and New York would have in the same ti…

Florida County Warns Of Strange-Tasting And Smelling Water As Scarce Liquid Oxygen Is Diverted To Covid Patients In Hospitals

Regional supplier Tampa Bay Water, which purifies water using liquid oxygen, said it would now use bleach to purify its water, stressing it would still meet the same high standards.

Second Booster Shot Of Johnson & Johnson Covid Vaccine Provokes Strong Immune Response, Company Says

Johnson & Johnson said the booster generated a “rapid and robust” increase in antibodies nine times higher than seen four weeks after the vaccine’s first and only dose was given.

Vaccine Protection Wanes Within Six Months Of Second Covid Shot, Study Warns, But They’re Still Effective Against Delta

The Pfizer shot was 88% effective at preventing infection a month after the second dose, but that fell to 74% after five to six months, the study found.

U.S. Satisfaction Hits Record Low In Biden Presidency Amid Delta Surge, Poll Finds—But Republicans Still Don’t View Covid As Major Threat

Democrats and Independents are increasingly worried about the threat of Covid-19 to the country while Republicans, practically no more concerned about the coronavirus than they were last month, are more concerned about immigration and the government.

Unvaccinated Covid Patients Cost U.S. Health System Billions — And They’re Not The Ones Paying For It

Taxpayers, businesses and workers will be paying back some $2.3 billion in Covid-19 hospital expenses from June and July alone that could have been easily prevented with vaccination, new research suggests.

The Cost Of Being Unvaccinated Just Went Up — Most Insurers Are Passing Costs Back To Patients As Covid Hospitalizations Soar

The majority of private health insurers are no longer waiving out-of-pocket costs for Covid-19 treatment and are passing these back to patients, according to research by KFF, and almost no provider will still be eating the cost by the end of the year.

Covid Vaccines Less Effective Against Delta Variant—And Pfizer’s Effectiveness Wanes Rapidly—Large Study Finds

The researchers found that fully vaccinated people carry just as much virus as unvaccinated people and warned that herd immunity for Covid-19 may be “unachievable” if they can also spread the disease as easily.

U.S. Hospitals Are Running Out Of A Crucial Covid Drug Amid Delta Surge And Worldwide Shortages

Hospitals could be without tocilizumab, one of the only therapies for Covid-19 patients cleared for use in the U.S., for weeks and the World Health Organization urged maker Roche to ensure it is distributed fairly around the world.

Stockpiling Vaccines Risks New Variants Emerging And Rising Covid Cases, Study Finds As U.S. Readies Booster Campaign

Leaving some countries without access to vaccines while others hoard supplies could prolong the pandemic, researchers warned, and bring about more transmissible variants capable of escaping the immunity offered by vaccination and infection.