Washington Post vaccine explainer
Creating a new vaccine can involve thousands of people over several years. Here's what it takes to produce a new FDA-approved vaccine. (John Farrell/The Washington Post)

The Washington Post

Creating a new vaccine can involve thousands of people over several years. Here’s what it takes to produce a new FDA-approved vaccine. (John Farrell/The Washington Post)

After witnessing its deadliest day since early May, the United States will soon have recorded more than 250,000 coronavirus fatalities. Nearly 1,900 deaths were reported on Wednesday, as the country again set a record for the number of patients hospitalized nationwide.

Here are some significant developments:

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