B CDC International 4 Level Travel Notice System Math Calculations

AI Thread Summary
The CDC's 4-level travel notice system classifies destinations as level four if the 28-day infection rate exceeds 500 cases per 100,000 people. For Costa Rica, with a population of 5,094,000, the calculation shows that 5,488 infections reported on February 11, 2022, results in an infection rate of 108 cases per 100,000, which is below the level four threshold. However, recent data indicates that Costa Rica experienced 140,000 new cases between January 23 and February 20, raising the infection rate to 2,750 cases per 100,000, categorizing it firmly in level four. This significant rise in cases raises concerns for potential travelers. Therefore, traveling to Costa Rica next month may be inadvisable given the high infection rate.
veithmoore
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The 4 level system categorizes international destinations at a level four the 28 day infection rate per 100,000 > 500.
The population of Costa Rica is 5,094,000.
The WHO had 5,488 infections for 2/11/2022.
How would you calculate the infection rate per 100,000?
5,094,000 ÷ 100,000 = 51
5,488 ÷ 51= 108 cases, well below the 500 case threshold for a level four.
Of note, the highest infection number I saw in the last 28 days was 17,000, which is 333 per 100,000, still < 500.
Thanks!
The 4 level system categorizes international destinations at a level four if the 28 day infection rate per 100,000 > 500.

The population of Costa Rica is 5,094,000.

The WHO had 5,488 infections for 2/11/2022.

How would you calculate the infection rate per 100,000?

5,094,000 ÷ 100,000 = 51

5,488 ÷ 51= 108 cases, well below the 500 case threshold for a level four.

Of note, the highest infection number I saw in the last 28 days was 17,000, which is 333 per 100,000, still < 500.

I would like to travel to Costa Rica next month, but not at a level 4 infection rate.
 
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veithmoore said:
The WHO had 5,488 infections for 2/11/2022.
That's for one day? The CDC definition uses the cases during the last 28 days. Using data from coronalevel.com, Costa Rica had 783,000-643,000 = 140,000 new cases from January 23 to February 20.
140,000/51 = 2750 which is deep in category 4. Close to three percent of the population became a confirmed case in the last 28 days.
 
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