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🤒 Daycare & School Exclusion Criteria Simulator

This model outlines the criteria for excluding and returning children from daycare or school during various viral exanthematous illnesses based on their contagiousness.

Hand-Foot-Mouth Disease & Childhood Rash Illnesses2DModerate60 FPS

Identifying the Contagious Window

Placeholder: the infectious window differs by pathogen and transmission route.

1–2 days: Chickenpox pre-rash spread (placeholder note)
Week 1: HFMD peak shedding (placeholder note)
Fever only: Roseola contagious phase (placeholder note)
Varies: Airborne vs contact (placeholder note)

Why the contagious window matters

Placeholder: contagiousness often starts before visible symptoms appear.

The 24-Hour Fever-Free Standard

Placeholder: most policies require fever resolution without medication first.

24h: Standard rule (placeholder note)
Required: Antipyretic-free (placeholder note)
Rash follows fever: Roseola nuance (placeholder note)
Plus dry sores: HFMD nuance (placeholder note)

Why fever-free matters

Placeholder: fever resolution signals declining viral activity in most cases.

Rash and Lesion Healing Milestones

Placeholder: crusting, drying, or fading rash mark different clearance points.

All crusted: Chickenpox milestone (placeholder note)
Sores dried: HFMD milestone (placeholder note)
Not required: Roseola milestone (placeholder note)
5–7: Typical days (placeholder note)

Reading lesion stages

Placeholder: lesion appearance is used as a visual proxy for contagiousness.

Illness-Specific Minimum Exclusion Days

Placeholder: each illness carries its own recommended days-out threshold.

~5 days: Chickenpox (placeholder note)
~2 days: HFMD (placeholder note)
~1 day: Roseola (placeholder note)
Pediatric guidance: Source (placeholder note)

Comparing durations

Placeholder: shorter incubation-to-clearance illnesses need fewer exclusion days.

Combining Signals into a Return Decision

Placeholder: the traffic-light model merges fever, rash and day count.

Exclude: Red (placeholder note)
Caution: Yellow (placeholder note)
Return: Green (placeholder note)
3 factors: Decision inputs (placeholder note)

Final clearance logic

Placeholder: illness type plus days-since-fever drives the light color.

Placeholder key insight: always follow local pediatric guidance over this simulator.

⚙ Under the hood

This model outlines the criteria for excluding and returning children from daycare or school during various viral exanthematous illnesses based on their contagiousness.

CanvasBiomedicine

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install