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Table 2 Levels of evidence for recommendations in the surveillance standards

From: Evidence and rationale for the World Health Organization recommended standards for Japanese encephalitis surveillance

Category I

Strongly recommended and strongly supported by well-designed experimental or epidemiological studies.

Category II

Recommended on the basis of theoretical rationale and suggestive, descriptive evidence.

Category III

Recommended on the basis of expert consensus and theoretical rationale.

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BMC Infectious Diseases

ISSN: 1471-2334

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