Just growing the infection denominator alone should not change policy very much though without also considering how infectious COVID-19 appears to be. NYC, Ital

Just growing the infection denominator alone should not change policy very much though without also considering how infectious COVID-19 appears to be. NYC, Italy, etc... have clearly had a lot of deaths from the virus regardless of the final death rate ends up being when this all over. Where antibody testing does come into play (and assuming antibodies at levels those are tested for do give some immunity) is when things can start to go back to normal.