How Evidence Strength Is Used
Source strength affects how a claim is worded. A WHO, CDC, ECDC, PAHO, or national health-authority statement can support direct wording when the page preserves the source date and context. Peer-reviewed literature can support background on symptoms, transmission mechanisms, and clinical patterns, but it does not replace current outbreak guidance when officials update a live investigation.
When evidence is preliminary, conflicting, or based on field reporting, AndesVirus.ai uses cautious language such as reported, under investigation, or officials describe. We avoid converting preliminary reports into settled medical advice, especially for case counts, contagiousness, treatment, severity, or travel-risk conclusions.