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Over the last few months, the overwhelming majority of people who died from Covid were unvaccinated. A study from the Centers for Disease Control and Prevention (CDC) published last month found that after the Delta variant became the most common variant in the US over the summer, unvaccinated Americans were 10 times more likely to be hospitalized and die due to the virus compared with vaccinated Americans.

Recent deaths have primarily been in southern states that have lagging vaccine rates, including Florida, Texas, Mississippi and Louisiana. Nationally, about 65% of people 12 and older who are eligible to receive the vaccine have been fully vaccinated, according to the CDC.

With a slight majority of the population fully vaccinated, the Covid death rate has significantly decreased compared with the death rate during previous surges of the virus, when the vaccine was unavailable. Following the surge in cases seen last winter, 100,000 people died in a 34-day period between January and February. Comparatively, it took over three months for the US to see another 100,000 deaths this summer.

Public health experts attribute the slowed death rate to the effectiveness of the vaccine but say that the milestone could have been avoided altogether with a higher vaccination rate.

“Reaching 700,000 deaths is a tragic and completely avoidable milestone. We had the knowledge and the tools to prevent this from happening, and unfortunately politics, lack of urgency and mistrust in science got us here,” John Brownstein, an epidemiologist at Boston children’s hospital, told ABC News.

Experts are hoping that hospitalizations and deaths will decrease as the surge in cases due to the Delta variant seems to be decreasing and vaccine mandates are starting to roll out.

Without a winter surge, which experts say is still possible, statistical modeling has shown that the Covid-19 cases can continue to decline into 2022, providing some much-needed relief to hospital systems across the country that have been overwhelmed by Covid-19 cases.

One hospital in rural Washington state is still dealing with a surge of patients, with 15 of its 20 intensive-care unit beds being occupied by Covid patients. The hospital has had to delay more than two dozen heart surgeries because of its shortage of ICU beds.

“We’ve got a backup of like 30 cases that need to be done,” Jackie Whited, director of intensive care at Central Washington hospital in Wenatchee, Washington, told the Seattle Times. “I have no beds, I will have one clean bed in the ICU.”

In an effort to get more people inoculated, vaccine mandates have been rolling out across the country, to some success.

Major health systems in California, where healthcare workers have been required to get vaccinated, have reported an uptick in vaccination rates among staff members. New York, which has a similar mandate, has seen similar results with thousands of healthcare workers getting vaccinated before the state’s vaccination deadline.