Table 1 Classification of stillbirths due to SARS-CoV-2 infection, modified from the WHO-UMC system for standardized case causality assessment
Causality term | Assessment criteria |
|---|---|
Certain | Event with plausible time relationship with COVID infection Cannot be explained by other disease or other event Supporting laboratory evidence |
Probably / Likely | Event with reasonable time relationship with COVID infection Unlikely to be attributed to disease or other event |
Possible | Event with reasonable time relationship with COVID infection Could also be explained by disease or other event |
Unlikely | Event with a time relationship with COVID infection that make an association improbable (but not impossible) Disease or other event provide plausible explanations |
Unrelated | Event is clearly NOT related to the COVID infection |