Typically they can’t tell it’s the virus because the person will just appear dead for a few days. Pathologists know what’s up and they have a secret pact to send all the infected bodies to Cypress, while the family receives autopsy results like “heart attack” or somesuch and proceed to have a funeral with a dummy in the coffin.
I guess sometimes people might stumble upon the truth, but reuniting with a ghostly family member tends not to work out too well! Eventually Cypress will seem like a perfect summer camp to dump your creepy amnesiac kid into