"Virus prone" doesn't mean you should get rid of it. Lilium candidum is virus prone, but do you see Lucius getting rid of his beautiful L. candidums? No! "Virus prone" in lilies means that the lily is more likely to suffer debilitating symptoms and die quicker. Other lilies could be just as likely to contract a virus as a virus prone lily, just not as likely to show strong symptoms or die as quickly, or they might not die at all and carry the virus as a constant source to infect new lilies. the only exception is if a lily tends to attract sucking insects (like aphids) that are vectors for lily viruses. Then that particular lily would be more apt to contract a virus, and then spread it to nearby lilies.
If grandma and granddaughter are both exposed to COVID-19 in the same way, they both have an equal chance of infection. But grandma is "virus prone" because if she gets it, her symptoms are more severe.
No need to throw grandma away prematurely. LOL A virus prone lily might be good to keep around. Like a canary in a coal mine, it might tell you if you have viruses already lurking in your garden.
