I think you have two issues and they are not related......
Issue #1....Fear of Corona Virus....According to the CDC, the survival rate for folks 69 or lower is 99%.....You certainly need to make your own decision on that but not sure that means no-one in your home can socialize....Again, your decision but check out the science.
Issue #2....Daughter living w/you.....That's a tough one and if it is your house, it's your rules. This may be the time for your daughter to decide to move on.....
I'd work thru them as two issues.
Good luck...both issues are tough and there is no right answer...just decisions.
Yes, let's check out the science.
There is death as a possible outcome, that is for sure. The IFR (infected fatality rate, % of death per estimated infected) varies in that age group by geography widely but let's say it is "just" 1% (or at least 5 to 10 times that of the flu).
The existence of pre-existing conditions (someone mentioned the poster may have fought cancer previously, that leaves you with a weakened immune system) will cause that number to rise, but for grin's - let's go with "just" 1%. (I don't know about you, but if someone told me that on my overseas flight, 3-4 people would die each time randomly, I'm not so sure I would have flown like I used to).
How about hospitalizations. People in their age group make up about 33% of the hospitalizations (
https://gis.cdc.gov/grasp/covidnet/COVID19_5.html). We have a lot of people in the hospital - hospital capacity is the reason we had stay at home orders and the continuing mask orders, we were and are at risk of overwhelming their capacity. Everything we are doing is to keep hospitalizations down so we can attempt to treat those that need it (don't need repeats of NYC or worse - Italy).
If you make it to the hospital and don't die - you are OK right? Wrong.
While you focus on IFR (because death is non-reversible), we should not forget that people that get hospitalized face a really hard road to recovery.
Once you have to be hospitalized - you run a very high risk of long term issues. How long term? We don't know yet because many people that got them back in March still have them.
this is just one sample article of thousands. search around for "long haulers" and ask yourself - would you like to spend your time in such a state as these people find themselves in? My son got lyme disease, the effects of which are a lot like many of those described by long haulers. It is quite simply life changing for him. It's been many years and he is still very slowing "getting better", I put that in quotes - because I don't think he'll ever be the same.
https://abc13.com/covid-19-hospitalized-patients-brain-disease-long-term-effects/6872459/
> A new study released this week, found **one-third of hospitalized COVID-19 patients develop a brain disease** caused by inflammation in the brain.
> Dr. Gustavo Roman, Professor of neurology at Houston Methodist, said the deadly virus can cause a variety of long term health effects to several organs which can lead to chronic illness, headaches, fatigue, and prolonged loss in taste and smell.
> "The damage has been made and we don't know how long it's going to last," Dr. Roman said. "It is a virus that has multiple weapons that affect the blood vessels, the lungs, the brain. **It can produce stroke, heart attacks, and a number of combinations. It can affect the kidney and the liver so it is a very dangerous enemy.**"
> Dr. Roman said the best line of defense is prevention.
so, while death might not be the outcome, a long term disability affecting the brain, the heart, the lungs and other organs exists.
so yes, agreed 100% - check the science and be aware that death is only but one possible outcome. There are other extremely undesirable outcomes as well.
that and a 26 year old is a fully grown adult, capable of reason and logic - and capable of finding roommates to move out with and "live the life".