Cortexa research tool·clinical·epidemiology

Epidemiology R0 Herd

Compute herd immunity threshold and effective reproduction number from R0 and vaccine efficacy. Returns the perfect-vaccine threshold (1-1/R0), the VE-adjusted minimum vaccination coverage (Vc = threshold/VE), and optionally Re at a given coverage fraction. Useful for vaccine program planning and outbreak assessment.

Livelast probed 2026-04-30 23:07Z· 100msCortexa

Status

The most recent probe succeeded. Safe to call from the agent today.

Last probed: 1d ago
Last success: 1d ago
Last latency: 100ms

Schema

JSON Schema the agent (or your API call) must match.

{
  "properties": {
    "R0": {
      "description": "Basic reproduction number (must be > 1)",
      "type": "number"
    },
    "VE": {
      "description": "Vaccine efficacy as fraction (0, 1], default 1.0 (perfect vaccine)",
      "type": "number"
    },
    "coverage": {
      "description": "Optional vaccination coverage fraction [0, 1] to evaluate Re at",
      "type": "number"
    },
    "operation": {
      "description": "Operation type",
      "enum": [
        "r0_herd"
      ],
      "type": "string"
    }
  },
  "required": [
    "operation",
    "R0"
  ],
  "type": "object"
}

Examples (1)

Default Epidemiology R0 Herd call

public-safeinput

{
  "R0": 1,
  "VE": 1,
  "coverage": 1,
  "operation": ""
}

Expected response keys: success

Anonymous-safe example. Rate-limited; no sign-in required.

Identifiers

Catalog ID: tu_Epidemiology_r0_herd
Tool name: Epidemiology_r0_herd
Added: 2026-04-30 22:47Z
Tags: tooluniverse

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