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. 2022 Sep 14;10:989320. doi: 10.3389/fpubh.2022.989320

Table 2.

Risk based classification.

Nation Class Risk
US 1 Lowest
2 Low
3 Moderate
4 High
EU 1 Lowest
2a Low
2b Moderate
3 High
Canada 1 Lowest
2 Low
3 Moderate
4 High
Japan 1 Lowest
2 Low
3 Moderate
4 High
Korea 1 Lowest
2 Low
3 Moderate
4 High