Benm
0
- Joined
- Aug 16, 2007
- Messages
- 7,896
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That would depend on the pathogen obviously. A pathogen can do significant damage yet not kill you, think of something like polio. It will make you stronger in the sense that you'll have increased immunity if exposed again in the future, but also crippled.
As for pathogens with 100% mortality: they could exist, but not for very long as they'd kill all of their host population off and then have nothing left to infect. Such event would wipe out both the population of pathogen and host, and it's hard to tell if this has ever happened or not.
Then again some pathogens can infect various hosts, rabies being a decent example of one that can use most mammals, as well as some birds and reptiles. If it were 100% mortal there would not be any mammals left on earth in the long run, but since we have vaccines now and even moderately effective treatment for unvaccinated people being exposed nowadays this will not happen.
The most successful viruses, if you use population size, are actually the ones that cause little to no problem for the host, and certainly not in the short term. At this point i'd say that HPV is the most successful virus in humans, infecting a majority of the population. In most cases it doesn't harm the host noticeably, but it does increase the risk of cervical cancer and such so we started vaccinating anyway (at least in western europe).
As for pathogens with 100% mortality: they could exist, but not for very long as they'd kill all of their host population off and then have nothing left to infect. Such event would wipe out both the population of pathogen and host, and it's hard to tell if this has ever happened or not.
Then again some pathogens can infect various hosts, rabies being a decent example of one that can use most mammals, as well as some birds and reptiles. If it were 100% mortal there would not be any mammals left on earth in the long run, but since we have vaccines now and even moderately effective treatment for unvaccinated people being exposed nowadays this will not happen.
The most successful viruses, if you use population size, are actually the ones that cause little to no problem for the host, and certainly not in the short term. At this point i'd say that HPV is the most successful virus in humans, infecting a majority of the population. In most cases it doesn't harm the host noticeably, but it does increase the risk of cervical cancer and such so we started vaccinating anyway (at least in western europe).