After a day of giving coronavirus vaccinations, Michael Weber and his team were headed back to Grants Pass, Ore., to administer their last doses on Tuesday when traffic suddenly came to a halt. Authorities had closed the snow-covered highway because of a car accident, and it would be hours before traffic could resume.

But Weber and his team of 20 staff members and volunteers didn’t have that much time to use the six Moderna doses they had left before the vaccines expired.

That’s when Weber had an idea: If he couldn’t make it to the clinic on time, he could bring the clinic to six other drivers stranded on the highway.

“I decided to start going door-to-door, car-to-car, offering” the vaccine, Weber, who is Josephine County’s public health director, told The Washington Post on Wednesday night.

The impromptu vaccination session amid a snowstorm is the latest example of health-care workers scrambling to make use of leftover doses during a sometimes chaotic rollout that’s seen around 21.1 million people receive one or both doses of the vaccine in the United States.

Weber’s six leftover Moderna doses, which already had been transferred to syringes earlier on Tuesday, needed to be used quickly or discarded. Like the Pfizer version, the Moderna vaccine must be used within six hours after being removed from subzero storage and reaching room temperature.

“We knew the vaccine would not make it back to Grants Pass,” said Weber, 40. “In all likelihood, it was going to expire.”

After consulting with his team, Weber and four staff members trekked through the snow, knocking on car windows in search of six lucky arms.

One team member carried a bin with the vaccine doses, alcohol, gauze and other medical supplies. Weber, who was in charge of the vaccination paperwork, carried the forms inside his coat. Others carried a container for used needles and an umbrella for the heavy snow.

An ambulance that had accompanied them during a vaccination session at a high school earlier that day was also present and ready to treat anyone in the rare case of an allergic reaction, Weber added.

After making a vaccine for the coronavirus, you have to get it to the masses. But that’s not so easy for a so-called cold chain vaccine, requiring exact temps. (The Washington Post)

But finding six people who wanted the shots wasn’t that easy, David Candelaria, a health officer with Josephine County Public Health, told The Post.

“We were a little nervous because not a lot of people in this part of the state are eager to get the vaccine at this point in time,” said Candelaria, 61.

The team went car-to-car and introduced themselves as county health officials stuck in the snowstorm, who, incidentally, had vaccine doses for a virus that has killed more than 427,000 Americans, including close to 2,000 in Oregon.

It took Weber and his team about 45 minutes to administer the six vaccine doses.

“We went through a lot of cars before we found six yeses,” Weber said.

While most people politely declined, Weber said, those who said yes could hardly contain their excitement.

“I can’t imagine a better way to spend four hours stuck in a snowstorm,” Weber said.

One man, Candelaria recalled, was so ecstatic that he got out of his car and took his shirt off in the middle of the snowstorm so the team could inoculate him. Another woman was so taken aback by the surprise vaccine that she could hardly sign the paperwork because her hands were trembling so much from excitement. The last person to get a leftover vaccination was a woman who didn’t make it on time to her appointment earlier that day.

“It was meant to be for her,” Candelaria said.