CrRW: Cr7d100k and RW_Cr7d100k
We propose to use CrRW to measure the trends in COVID-19 or other infectious diseases, which includes two indicators:
1. Cr7d100k: 7-day smoothed average daily case rate per 100k capita;
2. RW_Cr7d100k: the ratio of this week’s Cr7d100k comparing to the week before.
The data for calculating CrRW are from USAFacts and COVIDTracking.
By using these two indicators in combination, we can depict the current status of the epidemic as well as recent trends with following thresholds:
1. The GREEN status: There are two cases. First, if Cr7d100k <= 10 for the past seven days, it would be safe. Second, if Cr7d100k < 15 and RW_Cr7d100k < 1 for the past seven days, it would be relative safe;
2. The RED status: There are two cases. First, if Cr7d100k > 30 for the past seven days, the pandemic is extremely serious. Second, if Cr7d100k > 15 and RW_Cr7d100k > 1.1 and for the past seven days, the current pandemic situation is bad or the trend is bad;
3. The ORANGE status: Everything else is orange status as we cannot say much – it can go either way.
Data Sources
We get the latest COVID-19 data from the following data sources.
Due to differences in data update frequency, sometimes we have to use the data of closest dates to update the dashboard if the latest data is not available.
John Hopkins Coronavirus Resource Center:
The global and U.S. state-level cases and deaths data.
COVID Tracking:
The state-level cases, deaths, and tests data.
COVID Act Now:
The state-level and county-level cases, deaths, and vaccination data.
CDC Vaccination Tracker:
The latest state-level vaccination data.
NIH NIEHS COVID-19 Data Repository:
The county-level and state-level PVI* data.
USA Facts:
The county-level cases and deaths data.
Our World in Data:
The global vaccination data.
* The Pandemic Vulnerability Index (PVI) is an indicator which integrates baseline data on relevant community vulnerabilities with dynamic data on local infection rates and interventions PMID: 32817964. The data of PVI model are from CDC COVID Data Tracker.