## Problem 204 — rank:284

**Title:** Contribution of asymptomatic infection

**Added binding assumptions (LaTeX):**

```latex
Define never-symptomatic operationally over the specified complete follow-up interval and report that this is not a claim about all future time. The interval must support classification for the transmission horizon, and symptom onset after that horizon still matters for the presymptomatic label. Ratios require a positive denominator bounded away from zero for uniform precision. Both fractions use the same population and contact-law weighting.
```

**Direct edits:** 0. **Fresh external checks:** None; supplied sources retained as provenance.