^^^ This is a very interesting point, porkpal. Do pathogens totally die out after X amount of time? I find this fascinating if you place it in the context of ancient archeological sites for example. They still wear masks and use other protective gear digging out ancient burial sites in Egypt for fear of pathogens still active in those sites. Is that realistic?? If pathogens really die out after a certain amount of time, say 2 years in this particular case, why would anyone need worry about a site that is literally well over 2000 years old? How long can pathogens survive? Just wondering......
