User reports
0
Near baseline. 0 in the last hour. Typical hour is about 0.
All services / Health
cdc.gov · Health
Is CDC down?
Checks are succeeding and user reports are near the baseline.
Live diagnosis
Is it just me?
Finds which layer is broken (the service, its provider, your ISP, DNS, or your own network) and what to try.
Your browser → cdc.gov—
Your browser → us—
Our checksReaching it
Official · ReportsNo status feed · Near baseline
DNS (1.1.1.1 · Google)—
Your provider—
Connection—
Upstream—
Press Run testYour browser tests the site, us, and two public DNS resolvers. We never store your IP; only anonymous counts by network and region.
Live outage map
No reports in the last 24 hours.
Dots are whole states, provinces or countries, never exact locations. We never store IP addresses, and places with fewer than 3 reports are not shown. Updates every minute.
What's broken
Our checks
Reaching it
Last check reached it in 176 ms · 5 min ago.
Official status
No status feed
CDC does not publish a status feed we can read.
Reports and checks
Numbers behind the chart
| Time (UTC) | Reports | Baseline | Latency | Failed checks |
|---|---|---|---|---|
| Wed 12 | 0 | 0.0 | 39 ms | 0 |
| Wed 13 | 0 | 0.0 | 61 ms | 0 |
| Wed 14 | 0 | 0.0 | 55 ms | 0 |
| Wed 15 | 0 | 0.0 | 44 ms | 0 |
| Wed 16 | 0 | 0.0 | 54 ms | 0 |
| Wed 17 | 0 | 0.0 | 49 ms | 0 |
| Wed 18 | 0 | 0.0 | 64 ms | 0 |
| Wed 19 | 0 | 0.0 | 39 ms | 0 |
| Wed 20 | 0 | 0.0 | 53 ms | 0 |
Reliability
100%Uptime · 30 days
100%Uptime · 90 days
0 / 0Outages · 30 / 90 days
—Average outage
90 days ago → today. Uptime is from our own HTTP checks; outages are incidents that lasted long enough to list. We have 1 days of data so far, so the 90-day numbers fill in over time.
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Past outages
No outages on record for CDC yet. Outages of 10 minutes or more get their own page here.
Having trouble with CDC?
One report per service every 10 minutes from this network. No account.
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About CDC
CDC is listed in our Health category and checked at cdc.gov. Live checks and user reports.
CDC has no official status feed we can read, so this page relies on our own checks and user reports.
What usually goes wrong with health services: patient portal and member sign-in failures, prescription refills or appointment booking not going through, and app errors.
Measured uptime from our checks: 100% over 1 day of checks. No public incidents logged since monitoring began 1 day ago.
Response time over the last 24 hours: 65 ms average, 16–221 ms range across 61 successful checks.
Questions
Is CDC down right now?
Checks are succeeding and user reports are near the baseline.
When was CDC last down?
We have not recorded a public CDC incident since monitoring began 1 day ago.
What is CDC's uptime?
From our own checks: 100% over 1 day of checks.
How fast does CDC respond?
65 ms on average over the last 24 hours (16–221 ms).
Does CDC have an official status page?
Not one we can read. This page uses independent checks of cdc.gov and user reports.
CDC not working for me but the status is fine. What now?
It is usually local: try another browser or the app, switch between Wi-Fi and mobile data, and clear the cache. For health services, watch for patient portal and member sign-in failures, prescription refills or appointment booking not going through, and app errors. If many people report CDC here at once, the problem is on CDC's side.