DENVER (CBS4) – People got some fresh air on a beautiful Monday night in Denver. 20-year-olds Bridget Flanery and Kayla Lorenz went for a walk wearing masks.

“I have had people in my family who were fearful of COVID, as it is very important for me to remain vigilant with the precautions until we have herd immunity,” Flanery said.

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“I feel really happy, all of my roommates are vaccinated, so we feel really safe to live together,” said Lorenz.

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Both work in teaching and are already vaccinated. There are two in the 20-30 range that doctors see a bubble in COVID cases. There may be various reasons.

“The number of positive cases is younger for many reasons, including vaccinations, and people in the older or at-risk group have certainly learned to live with it for a year and have safely learned that masking works, physical distancing works,” said Dr. Richard Zane, chief of emergency medicine and chief innovation officer of UCHealth.

But young people who are less affected can be more relaxed.

“I think it’s definitely a mix of some people who become apathetic and desensitized because we’ve been in this pandemic for so long,” said student Lilly Lichtenberger. “I think that after a year of this pandemic, people are fed up with it and I’m not blaming them. It can lead to complacency and I understand that perfectly,” Zane said.

He doesn’t see large super-spreader events, but events of modest size when COVID is shared by a dozen or so people indoors and without a mask. An increasing proportion of cases among young people also means an increasing percentage of hospitalizations.

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“The boys tend to have a lot less serious illnesses, be ventilated less frequently, go to the hospital less often, but when you have that many you must have some who get seriously ill,” Zane said.

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Death rates in Colorado are falling and it’s positive, but Zane says variants add a new concern.

“We don’t know whether it is a characteristic of the individual virus or whether people who are asymptomatic or minimally symptomatic have a higher viral load. I don’t know yet, but there is a link between variants and increased portability. “

Denver University student Sophia Taylor hopes to be vaccinated soon to end this pandemic.

“They don’t really think about the broader perspective of passing them on to other people.”

Much of the population is still unvaccinated and unprotected. Zane says it can do a lot of harm, even for those at lower risk.

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“It’s still pretty moody. It is still a very dangerous disease and a correlation or description similar to that of the flu really just isn’t the case. I think the takeaway message is that vaccines work. Get vaccinated as soon as possible. “