@Ashedryden sure:

• be well rested and less stressed. Really! Immune systems perform better when the organism is well-rested, and worse when under stress conditions. Literally calm your system beforehand with meditation if you can?
• have your vitamins. Results for vitamins D and C vary from "no effect" to "protective" (https://pmc.ncbi.nlm.nih.gov/articles/PMC9864223/ for example), with clear evidence that low vitamin D can down-modulate immunity. Especially important for PoC in northern climes, folks who don't work outdoors, and similar. Maybe start supplementing vitamin D (through sun exposure or pills) a week+ ahead?
• nasal sprays and mouthwashes. There is evidence for both xylitol and iota-carrageenan giving protection against SARS-CoV-2. A nice review with links to actual research from this past summer: https://integrativewomenshealthinstitute.com/how-to-prevent-long-covid-summer-2024-update/
• UV light disinfection, aka Germicidal Ultraviolet. This is harder to access as most installations are for industry, but if you have time and energy perhaps you can DIY it or find a supplier.
• explicitly say "And if you want to come but are feeling sick, let us know, and we'll drop off a get-better goodie basket and a little gift!" or similar, so folks who are ill have motivation to not come.

You've already said you will ventilate and filter. Add more filters? HEPA is great but Corsi-Rosenthal boxes with MERV-13 filters are also highly effective, relatively inexpensive, and if made with computer fans, very very quiet. They can be totally DIY - there's even a song about it https://www.youtube.com/watch?v=5XS-7vgThfQ !!! - , and various sellers have them available as kits or prefabbed, too.

Less likely to be useful:

• vaccinate 2-3 weeks prior to be at peak vax-induced immunity before waning
• PlusLife or RAT testing at the door
• free mask basket at the door. You sound perhaps willing to use an N95 but you indicated your guests wouldn't.

I hope some of those help! None of them will guarantee no infection, but when one must face such situations, the odds can be improved.

@ai6yr @daihard yes exactly - #SwissCheeseModel defenses - stack as many modifiers as possible to every roll of the die, roll as few dice as possible

those of us who have modeled the problem rationally and using data almost all come to the same point as you, or else go full ostrich

preaching to the choir here, I know. I just wish we could help the rest of the world to understand (and de-politicize in many places).

@sysop408 It’s worth adding that some research suggests that viral load is significant. Prolonged contact is bad, high concentrations are worse than low concentrations. Masks help. HEPA filters help. Fresh air helps.
#SwissCheeseModel
#COVID19 #covid

@larsmb @mavori

Kann ich mir sehr gut mit als einen der Gründe vorstellen.

Frage mich immer mehr, wie groß das Defizit im Grundverständnis bzgl. der Übertragung / #Infektion via #Aerosole ist. Hab mittlerweile dermaßen viel haarsträubendes gehört und gesehen (von MFAs bis Profs)..

Auch kürzl. Maske müssen Sie nicht mehr tragen - aber Hände desinfizieren..

Wie Ihr sagt, Ignoranz ist auch eine Option.. - leider die schädlichste und teuerste.

@mackayim2022 Thanks - & do please keep posting substantive commentary on the #fediverse!

I suggested more #hashtags, an important tool for discovery & also for following everything on a topic (especially with Boolean-type search options on the advanced web interface & in RSS). The variety of hashtags in use is an issue, worth considering in order to encourage a move here for serious discussion of #Covid #Sars2 #SarsCoV2 #pandemic #XBB15...
#CovidIsAirborne
#MaskUp
#SwissCheeseModel

@augieray @markusl
#Covid-19
#SwissCheeseModel