Sorry everyone. My original post said "injected" (thanks Jolly Ogre). It should have read 'infected'. <wait a go spelchex>
Just to clarify further, it took 18 months to track down the reason for her illness. (I am no doctor). By then it was too late to do anything. A virus, unlike a treatable bacterial infection, usually has to run it's course. Someone who is healthy and does not have a compromised immune system can usually make it through an viral infection with only flu-like symptoms. In my dear brides case, a microscopic virus got into her (food, drink, ice) and didn't want to leave. There are a handful of cases every year in the USA that CDC discloses. In 2018 and in 2019 I remember reports in US news media about the same mysterious bug. No idea where it came from, caused it, or how to cure it.
https://globalnews.ca/news/4564424/afm-polio-like-illness-us/
So now that I have scared you, your only real defense (besides staying locked in a bubble), is avoiding sick folks and being a religious hand washer. Start doing little things like taking strong anti bacterial / alcohol wipes and cleaning the arms and trays on airplanes and trains before you use them. Disinfect hands in hospital, and shower up after you get home from visiting folks. And my favorite, where cloth gloves when you can - ie: buffet lines, multi use tables without changeable clothes, hand rails, and elevator buttons etc. Sound silly? Maybe, but if you are wearing gloves you will probably not itch your eye, pick your nose, or suck your thumb. You will take off the gloves to do that so your hands are free of nasty's. Change the gloves regularly or wash them each night. You may look like Michael Jackson, but tell people it's a new trend.
Will you still get sick? Most likely, but you have mitigated it as best you can, and it may keep you safer. NW