Covid-19: NYC Positivity Rates By Borough, to 10.20.20
Positivity here is the number of people testing positive on a day relative to the number of tests performed that day. The CDC uses the WHO standard of 5% or less for 14 days to determine which states meet its guidelines in terms of limiting transmission. Governor Cuomo brings out the heavy artillery if the 14-day moving average of a New York county exceeds 2% positivity.