The hub for authoritative virus information
A case fatality rate on its own is a number. Next to fourteen others, sourced the same way and dated, it becomes something you can actually reason about. That comparison is what this network exists to publish — built from CDC, WHO, and NIH figures with every source shown, and every gap left honestly empty.
Every figure below is counted from the live dataset at build time. None of it is typed in by hand, so none of it can quietly go stale.
United States figures. Read across a row and the shape of each disease appears — including from the cells that are empty. Norovirus has no published fatality rate, but twenty million illnesses beside about 900 deaths says enough. Hantavirus has no clean annual case count at all, because CDC publishes only a cumulative total, yet kills 38% of the people who develop it. Ebola has no US row whatsoever, because it is not here. That is the point of the comparison: the empty cells are part of the information, not a gap in it.
| Virus | Annual Exposure / Cases | Case Fatality Rate | Annual Deaths |
|---|---|---|---|
| COVID-19 | 10,400,000–16,700,000 | 0.2–0.51% | 34,000–53,000 |
| Ebola virus disease | Data not available | Data not available | Data not available |
| Hantavirus | Data not available | 38% | Data not available |
| Norovirus | 19,000,000–21,000,000 | Data not available | 900 |
Ebola's row is empty because it is not established in the United States — CDC has no domestic case series to report. The comparable Ebola figures are global, and are on its page. Every number above links to its source on the full comparison.
See all 15 viruses, both US and global, with every source →
What one case of each costs — the economic companion table →
"We use primary sources" is what every health site says. What matters is what happens when the sources disagree, when only weak evidence exists, or when the figure a reader wants has never been published. Three rules decide that, and they are enforced in the data model rather than left to discipline:
The full scheme is on Our Sources; the process behind every page on How We Answer Questions.
A corrections policy is a claim about behaviour. The record is more useful than the claim, and the two entries below are the ones that say most about how the site works — one where a correction had to be undone, one where a reported error turned out not to be one.
Correction reverted · hantavirusquestions.com
What was published: The dilution was published as 1 part bleach to 9 parts water, then changed to 1:10 on the basis of a CDC citation.
What it says now: Reverted to 1:9. Re-checking found the current CDC consumer cleanup page specifies 1 part bleach to 9 parts water, so the "correction" had introduced the error. The live pages state 1:9.
Reported error rejected · norovirusquestions.com
What was published: An internal audit flagged the stated 145°F cooking temperature as a self-contradiction against other guidance on the site.
What it says now: No change. On review, CDC’s Norovirus Fact Sheet for Food Workers supports the figure as published. The flag was a false positive and was recorded as one rather than quietly dropped.
Each site covers one virus in depth. This hub connects them and explains what they share: the same editorial standards, the same author, and the same commitment to accuracy.
SARS-CoV-2, variants, vaccines, long COVID
COVID-19 is caused by SARS-CoV-2, first identified in late 2019. It has caused more than 7 million deaths globally and spawned multiple variant waves. Questions about variants, vaccines, long COVID, and reinfection remain highly relevant.
Outbreaks, transmission, treatment, hemorrhagic fever
Ebola virus disease (EVD) is a severe, often fatal illness caused by Ebola virus. Outbreaks occur primarily in sub-Saharan Africa. A Bundibugyo virus outbreak that began in the DRC's Ituri Province in 2026 — now the second-largest Ebola outbreak on record — prompted a WHO Public Health Emergency of International Concern.
HPS, HFRS, rodent exposure, prevention
Hantavirus causes two serious diseases: Hantavirus Pulmonary Syndrome (HPS) in the Americas and Hemorrhagic Fever with Renal Syndrome (HFRS) in Europe and Asia. It is transmitted by inhaling dust contaminated with infected rodent droppings — not person-to-person (except the Andes virus strain).
Stomach bug, cruise ships, food safety, outbreaks
Norovirus is the leading cause of acute gastroenteritis worldwide, responsible for 685 million illnesses and roughly 50,000 childhood deaths annually. It spreads through contaminated food, water, and surfaces — and is highly resistant to alcohol hand sanitizers. There is no approved vaccine or antiviral.
Four sites. One set of standards. One author. All primary sources.
Each site is reviewed monthly against live CDC and WHO guidance. Pages are corrected when authority sources change — not just when it's convenient.
Every page is written by the same independent researcher, who is not a physician. No page names a clinical reviewer, because none reviews them — that boundary is stated rather than blurred.
This network provides general educational information only. For personal health decisions, consult a qualified healthcare provider.
Last updated: · Editorial Policy · Corrections Policy