The main countermeasure to pathogens that take a while to cause symptoms is good epidemiologic surveillance systems. This “starts the clock” faster on countermeasures.
Could you expand on this a little please? Obviously this would allow you to identify the infectious agent, but you wouldn’t have any way to calibrate your response appropriately. Ie, your likely conclusion would be that something is spreading but causes no ill effects (like the majority of microbes in our body).
Yeah, you bring up a really good point: most of the “bugs” circulating aren’t harmful, so if we have a surveillance system that’s completely pathogen agnostic we’ll be chasing beneficial gut bacteria or harmless phage. In my previous job in a wastewater testing lab, one of the positive controls we used was a virus that infects peppers- we’d find tons of it.
With regards to viruses, the virus needs to be able to enter human cells, take over the cellular machinery to replicate, and evade the human immune response. We know broadly what kinds of virus families can do this and what kinds can’t, so if we see a virus in a family that can infect humans that is increasing exponentially in our surveillance system, we know there is an outbreak/epidemic. We can then do some bench science to figure out what human cells it’s infecting, how it’s evading the immune system, etc. The viruses that we coexist with relatively well, such as human cytomegalovirus, have coevolved with humans over millennia. A novel virus that was increasing rapidly in a human population would be cause for concern even if there is no symptoms yet. Also, many times there are symptoms, but they are not connected to the novel pathogen because they look so much like other diseases- flu and COVID-19, for example.
With regards to bacteria, I’ll admit I’m not as knowledgeable there, but I’m also not as worried in the near term about GCBRs from bacteria.
You write:
...spreading but causes no ill effects (like the majority of microbes in our body).
The second part of your statement makes sense to me- the vast majority of microbes in our body cause no ill effects in people with a healthy immune system. However, I’m not so sure about the first statement: if it’s spreading, that means it’s either taking over human cells and turning them into virus factories, or it’s colonizing more and more human tissue. That means the balance between the immune system and this microbe is out of whack. “Harmless” bacteria or viruses that start spreading out of control kill immunocompromised people all the time- a big part of the “no ill effects” is actually that it’s not spreading, but that it’s in a stable equilibria with your body and immune system.
Could you expand on this a little please? Obviously this would allow you to identify the infectious agent, but you wouldn’t have any way to calibrate your response appropriately. Ie, your likely conclusion would be that something is spreading but causes no ill effects (like the majority of microbes in our body).
Yeah, you bring up a really good point: most of the “bugs” circulating aren’t harmful, so if we have a surveillance system that’s completely pathogen agnostic we’ll be chasing beneficial gut bacteria or harmless phage. In my previous job in a wastewater testing lab, one of the positive controls we used was a virus that infects peppers- we’d find tons of it.
With regards to viruses, the virus needs to be able to enter human cells, take over the cellular machinery to replicate, and evade the human immune response. We know broadly what kinds of virus families can do this and what kinds can’t, so if we see a virus in a family that can infect humans that is increasing exponentially in our surveillance system, we know there is an outbreak/epidemic. We can then do some bench science to figure out what human cells it’s infecting, how it’s evading the immune system, etc. The viruses that we coexist with relatively well, such as human cytomegalovirus, have coevolved with humans over millennia. A novel virus that was increasing rapidly in a human population would be cause for concern even if there is no symptoms yet. Also, many times there are symptoms, but they are not connected to the novel pathogen because they look so much like other diseases- flu and COVID-19, for example.
With regards to bacteria, I’ll admit I’m not as knowledgeable there, but I’m also not as worried in the near term about GCBRs from bacteria.
You write:
The second part of your statement makes sense to me- the vast majority of microbes in our body cause no ill effects in people with a healthy immune system. However, I’m not so sure about the first statement: if it’s spreading, that means it’s either taking over human cells and turning them into virus factories, or it’s colonizing more and more human tissue. That means the balance between the immune system and this microbe is out of whack. “Harmless” bacteria or viruses that start spreading out of control kill immunocompromised people all the time- a big part of the “no ill effects” is actually that it’s not spreading, but that it’s in a stable equilibria with your body and immune system.