Test Positivity The percentage of virus tests that show positive results ("positivity") is an indicator of the percentage of the total infections that is being identified through testing. The higher the positivity is, the lower the percentage of overall infections being detected is, all other factors being held constant. Most states started with high Read more
There's a New York Times article today that makes some comments about percentage of positive tests in each state. It's quite critical, and I think it whitewashes the challenge of building the surge capacity that's needed to respond quickly. Most states had testing pretty well under control at the end of May, but with Read more
These graphs show the 7-day trends in positive test results for each province. The data has been retrieved from the Government of Canada. The graphs compare the number of positive tests for the most recent 7-day period to the results for the preceding 7-day period. In other words, they compare the most recent days Read more
The percentage of virus tests that show positive results ("positivity") is an indicator of the percentage of the total infections that is being identified through testing. The higher the positivity is, the lower the percentage of overall infections being detected is, all other things being equal. These graphs show the history of positivity in Read more
These graphs show the history of contagiousness in each province.Contagiousness is calculated as the number of people who are actively infected for the 9-day period from 3 days before a positive test to 5 days after.Total number of people infected is calculated using the two infection models.Most provinces have had few enough positive tests and deaths Read more
The percentage of virus tests that show positive results ("positivity") is an indicator of the percentage of the total infections that is being identified through testing. The higher the positivity is, the lower the percentage of overall infections being detected is, all other factors being held constant. Most states started with high positivity (in Read more
The percentage of virus tests that show positive results ("positivity") is an indicator of the percentage of the total infections that is being identified through testing. The higher the positivity is, the lower the percentage of overall infections being detected is. These graphs show the history of positivity in each province. Read more
The percentage of virus tests that show positive results ("positivity") is an indicator of the percentage of the total infections that is being identified through testing. The higher the positivity is, the lower the percentage of overall infections being detected is. Most states started with high positivity (in some cases 30-40%) and are now Read more
These graphs show the history of contagiousness in each province. Contagiousness is calculated as the number of people who are actively infected for the 8-period from 3 days before a positive test to 4 days after. Total number of people infected is calculated using the two infection models. Read more
These graphs show the 7-day trends in positive test results for each province. The data has been retrieved from the Government of Canada. The graphs compare the number of positive tests for the most recent 7-day period to the results for the preceding 7-day period. In other words, they compare the most recent days Read more
