Re:San Jose: Three TSA agents test positive for Covid-19
by nullc on Wednesday March 11, 2020 @01:28AM
(#22543243)
Contagion is funny.
Each sick person will only, on average in unmitigated conditions, get two or three other people sick. If you consider just a single infected person that doesn't seem that infectious at all. Yet because this is an exponential process that won't slow down until a significant fraction of the population is infected or immune 2-3 is enough to go from a couple people sick to most of the world in fairly short order.
Yet if you can reduce that 2-3 down to 1 or below even with relatively half-assed measures like telling some people to stay in inside, isolating known-infected and likely-infected persons, closing down some major spreading venues, telling people to wash their hands or use surgical masks... presto chango the disease dies out and no more than a tiny percentage of the population will get infected.
If the half-assed measures reduce the exponent but don't get it below 1, eventually most people will still get infected but it will take a lot longer. That extra time means the hospitals get less overloaded and lots of additional lives are saved because many covid19 cases require serious medical intervention (forced respiration). It also potentially creates time for better treatments to be created/discovered.
The best time to start seriously addressing this would have been weeks ago when it became clear that it was spreading from unknown and non-isolateable sources inside the country-- at least to the extent that it could be done without major damage... before there were thousands (likely hundreds of thousands now; given the observed spreading rates) of cases circulating in the US. But so long as the vast majority of the people who could eventually be infected are not yet infected, it's STILL a good idea.
On top of the risk we're facing from hospitals overloading, there is also a lot of potential for widespread panic once testing catches up and the numbers go from a rounding error to "big and scary looking" overnight. Beginning countermeasures earlier should help reduce the panic both by decreasing the peak infected numbers and by making it clear that the issue is being addressed.
Each sick person will only, on average in unmitigated conditions, get two or three other people sick. If you consider just a single infected person that doesn't seem that infectious at all. Yet because this is an exponential process that won't slow down until a significant fraction of the population is infected or immune 2-3 is enough to go from a couple people sick to most of the world in fairly short order.
Yet if you can reduce that 2-3 down to 1 or below even with relatively half-assed measures like telling some people to stay in inside, isolating known-infected and likely-infected persons, closing down some major spreading venues, telling people to wash their hands or use surgical masks... presto chango the disease dies out and no more than a tiny percentage of the population will get infected.
If the half-assed measures reduce the exponent but don't get it below 1, eventually most people will still get infected but it will take a lot longer. That extra time means the hospitals get less overloaded and lots of additional lives are saved because many covid19 cases require serious medical intervention (forced respiration). It also potentially creates time for better treatments to be created/discovered.
The best time to start seriously addressing this would have been weeks ago when it became clear that it was spreading from unknown and non-isolateable sources inside the country-- at least to the extent that it could be done without major damage... before there were thousands (likely hundreds of thousands now; given the observed spreading rates) of cases circulating in the US. But so long as the vast majority of the people who could eventually be infected are not yet infected, it's STILL a good idea.
On top of the risk we're facing from hospitals overloading, there is also a lot of potential for widespread panic once testing catches up and the numbers go from a rounding error to "big and scary looking" overnight. Beginning countermeasures earlier should help reduce the panic both by decreasing the peak infected numbers and by making it clear that the issue is being addressed.