It's been over a year since COVID-19 hit US soil. Now, we're witnessing the biggest vaccination campaign in history.

Since vaccine distribution began in the US in December, 246 million doses have been given. In the last week, an average of 2.42 million doses per day were administered. More Americans have now received at least one dose than have tested positive for the virus since the pandemic began. 

At the time of writing, New Hampshire has vaccinated the highest percentage of its state population. The first dose of the vaccine has been administered to 60.2% of its residents. Massachusetts follows with 56%. Press the play button on the chart below to see how the stats change over time. 

The eight states administering the vaccine to the highest percentage of their populations — seven of which are located in the Northeast — also include Connecticut, Maine, Vermont, New Jersey, Hawaii, and Rhode Island. Meanwhile, Mississippi, Alabama, and Louisiana are among the states that have administered the first dose to the smallest percentages of their populations

But, according to a May 3 report from the New York Times, experts say the United States is unlikely to reach herd immunity as more contagious COVID-19 variants spread and many Americans remain unvaccinated. “The virus is unlikely to go away,” Rustom Antia, an evolutionary biologist at Emory University in Atlanta, told the Times.

On April 3, more than four million people in the United States received a coronavirus vaccine — the nation’s highest one-day total since December — amid a rising caseload and increase in hospitalizations.

On March 10, President Joe Biden ordered the US Department of Health and Human Services to buy 100 million additional doses of Johnson & Johnson's single-shot COVID-19 vaccine. The pharmaceutical giant had already agreed to provide 100 million doses by the end of June. 

On March 3, Biden announced the US is "on track" to have every adult in America vaccinated by the end of May. 

On March 1, Johnson & Johnson began shipping the first batch of its coronavirus vaccine (almost 4 million doses) to states and pharmacies, just two days after the US Food and Drug Administration gave Emergency Use Authorization.

The US caseload fell 61% in February, its biggest drop yet, but the World Health Organization says cases are on the rise globally.

On February 24, the FDA shared new analyses proving the one-shot coronavirus vaccine made by Johnson & Johnson provides strong protection against COVID-19. The vaccine had a 72% overall efficacy rate in the US and 64% in South Africa, where a highly contagious variant emerged in the fall and is now driving most cases. The vaccine also showed 86% efficacy against severe forms of COVID-19 in the US, and 82% against severe disease in South Africa, meaning that a vaccinated person has a much lower risk of being hospitalized or dying from the virus. 

On February 11, President Biden announced the federal government will purchase 600 million vaccine doses from Pfizer and Moderna to be delivered by the summer. The federal government also announced that it is using the Defense Production Act to address other issues like limited supplies of syringes or protective gear.

In late January, the Biden administration promised to provide states with  vaccine supply projections and updates at least three weeks ahead of time, an effort to increase the number of vaccinators and introduce thousands of new government-supported vaccination sites.

This data will be updated every day. Copy will be updated every week. 

About the Data:

Thinknum tracks companies using the information they post online, jobs, social and web traffic, product sales, and app ratings, and creates data sets that measure factors like hiring, revenue, and foot traffic. Data sets may not be fully comprehensive (they only account for what is available on the web), but they can be used to gauge performance factors like staffing and sales.

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