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API · /epidemic-api

Epidemiology API

healthy 3,980 Subscribers

Epidemiology-basics maths as an API, computed locally and deterministically. The herd-immunity endpoint computes the herd-immunity threshold HIT = 1 − 1/R0 — the immune fraction of a population at which an outbreak can no longer sustain itself — from the basic reproduction number R0, and adjusts for an imperfect vaccine by dividing by its efficacy, so a disease with R0 = 3 needs about 67 % immune (74 % vaccinated with a 90 %-effective vaccine) while measles at R0 ≈ 15 needs about 93 %. The r-effective endpoint computes the effective reproduction number Re = R0 · susceptible fraction and flags whether the epidemic is growing (Re > 1) or shrinking. The final-size endpoint solves the final-epidemic-size equation Z = 1 − e^(−R0·Z) for the eventual attack rate of an unmitigated SIR epidemic — about 80 % at R0 = 2. The doubling-time endpoint gives the case-doubling time from a growth rate, or from R0 and the serial interval. Fractions are 0–1 and percentages are derived. Everything is computed locally and deterministically, so it is instant and private. Ideal for public-health, epidemiology-education, dashboard, science-communication and outbreak-planning app developers, herd-immunity and reproduction-number tools, and health software. Simple compartmental relations for education and planning, not a substitute for full epidemiological modelling. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. This is epidemiology basics; for population-genetics Hardy-Weinberg use a genetics API.

#epidemiology #herd-immunity #r0 #reproduction-number #public-health #developer-tools
api.oanor.com/epidemic-api
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Machine-readable spec so AI agents can integrate this API.

/api/epidemic-api/openapi.json
/api/epidemic-api/llms.txt

Discovery: GET /api/index.json lists every API.

Epidemiology API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
74 ms
Server probes · 24h
Subscribers
3,980
active
Total calls
95
last 7 days
status Full status page → · 10 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 4,250 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 4,250 calls/month
  • 2 req/sec
  • Herd immunity + Re + final size + doubling
  • No credit card
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Starter

€5.10 /month

  • 42,500 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 42,500 calls/month
  • 6 req/sec
  • Vaccine efficacy, serial interval
  • Email support
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Pro

€13.80 /month

  • 199,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 199,000 calls/month
  • 15 req/sec
  • Dashboard & planning pipelines
  • Priority support
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Mega

€42.00 /month

  • 1,215,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,215,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Epidemiology API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Epidemiology API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Epidemiology API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Epidemiology API cost?
Epidemiology API has a free tier with 100 calls / month. Paid plans start at €5.10 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Epidemiology API GDPR-compliant?
All requests to Epidemiology API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/epidemic-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/epidemic-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/epidemic-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/epidemic-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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