Basic Reproduction Number (R₀) Calculator

R₀ represents the average number of secondary infections caused by one infected individual in a completely susceptible population. R₀ > 1 means epidemic growth; R₀ < 1 means decline.

Current R₀

0.00

R₀ = (Contacts/Day) × (Transmission Probability) × (Infectious Period)

Contact Rate: 10 contacts/day

Average number of people contacted per day

Transmission Probability: 10%

Probability of transmission per contact

Infectious Period: 10 days

Duration a person remains infectious

Intervention Effectiveness: 0%

Reduction from masks, distancing, vaccination, etc.

Base R₀ (no intervention)

0.00

Effective R (with intervention)

0.00

Growth Rate

Simulated Epidemic Curve (based on current R₀)