Part 1 · Outbreak Simulator
Part 2 · Map the Outbreak
Part 3 · Chain of Infection Cases
Part 4 · Sort and Order
Part 1: Outbreak Simulator
Start outbreak
Reset
Speed 2 days per second 5 days per second 10 days per second Day 0
1. Choose a germ
Contacts per day 10
Chance of spread per contact 4%
Days infectious (recovery time) 7 days
R₀ = contacts × chance × days
2. Protect the town
Masks40% less spread per contact
Isolate when sick70% fewer contacts after day 2
Changing a germ setting or the vaccine coverage resets the town. Masks and isolation can be switched on at any time.
Outbreak readouts Measure Value
Challenges
Part 2: Map the Outbreak
Plot the deaths
Show walking zones
Show clues
Start over
London, 1854 · simplified
Be the epidemiologist
Cholera is killing people in one neighbourhood. Most doctors blame "bad air". Use the map to find the real source.
Tap a pump on the map, or choose it here:
Hint Show answer Next step →
Wrong answers are fine here. Read why, then try again.
Part 3: Chain of Infection Cases
Hint Show answer Next question →
Wrong answers are fine here. Read why, then try again.
Part 4: Sort and Order
Sort into groups Put in order
Tap a card, then tap a bin. Or drag the card into a bin.
Your job
Check
Hint
Show answer
Start over
0:00
Tip: after checking, tap any card to read why it belongs where it does.
Your job
Drag cards to reorder them, or use the arrow buttons on each card.
Check
Play my order
Hint
Show answer
Shuffle again
0:00