Outbreak Monitor is a hobby aggregator. It tracks a rotating set of
active disease outbreaks — currently led by the 2026 US
cyclosporiasis surge, alongside hantavirus clusters, Ebola, mpox and
H5N1 — pulling public alerts and news, grouping them geographically,
and rendering a map you can scan in five seconds. Every counter is
stamped with how old its figure is, so a number that has stopped
updating is labelled rather than left to look current. It rebuilds
itself once an hour.
This is not a medical resource.
Nothing here is clinical advice, diagnostic information, or an
official outbreak declaration. If you think you've been exposed to
any illness tracked here, contact your healthcare provider or local
health authority. For US guidance, see the
CDC.
For global outbreak surveillance, see
WHO Disease Outbreak News.
Where the data comes from
ProMED-mail — moderated outbreak alert network run
by the International Society for Infectious Diseases. We scrape the
public hantavirus search results page hourly.
promedmail.org
Google News RSS for queries like
cyclospora and hantavirus — a firehose of
press coverage from around the world, merged into one news feed.
CDC cyclosporiasis outbreak pages — the headline
counts (confirmed, under-review, hospitalized, deaths) for the current
US cyclosporiasis surge. CDC bot-blocks automated fetches, so when the
live scrape is refused the tracker shows the most recent dated CDC
figure, always stamped with its as of date.
cdc.gov
ECDC — hantavirus-related agency updates, plus the
dedicated Andes hantavirus outbreak page for MV Hondius counters when
it can be parsed.
ecdc.europa.eu
WHO Disease Outbreak News — DON599 is used as the
fallback source for the Hondius outbreak counters when ECDC's structured
page is unavailable.
who.int
CDC HPS surveillance — the static "US snapshot"
box uses the most recent annual aggregate published by CDC
(1993 – 2023, refreshed when CDC posts new totals).
cdc.gov
How country detection works
A simple regex looks for country names (and a few aliases — e.g.
California or U.S. roll up to USA) in each
article title and summary. Items that don't name a country aren't placed
on the map but still appear in the news list below it.
Spread arcs
The animated dashed lines aren't real-time travel data. They're
hardcoded routes for major outbreaks the news has explicitly
described — for example, the 2026 Argentina cruise-ship Andes-virus
outbreak with passengers returning to the US, Chile, and Brazil.
They're meant to convey "this story has a known geographic
trajectory," not to claim transmission paths.
What's missing
Broad WHO DON indexing — the current WHO Disease
Outbreak News listing doesn't expose a verified RSS feed for this
static build. The tracker uses the relevant DON599 page directly for
Hondius fallback counters.
State / sub-national resolution — the country
centroids are population-weighted but coarse. A 2026 Argentina
outbreak shows up in the middle of the country, not where it
actually occurred.
Per-post ProMED links — ProMED's site uses
JavaScript click handlers, so individual post URLs aren't in the
HTML. Items link back to the search page; you can find the
specific post there.
Further reading
Wikipedia — MV Hondius hantavirus outbreak:
community-maintained background article covering the timeline,
epidemiology, and ongoing response.
en.wikipedia.org