Every time you block some percentage of spreaders, you are reducing the reach of the virus. Even if a measure is only 20% effective, it's worth investing in.
If it's 40% effective and masks are 40% effective, collectively they are 64% effective together. This idea that measures need to be 90% effective is bunk. Incrementally we can improve the odds significantly.
Every time you block some percentage of spreaders, you are reducing the reach of the virus. Even if a measure is only 20% effective, it's worth investing in.
If it's 40% effective and masks are 40% effective, collectively they are 64% effective together. This idea that measures need to be 90% effective is bunk. Incrementally we can improve the odds significantly.