Thread by @PathogenScribe

Hey guys...something cool is happening.
The Andes virus discussion is scientific consensus evolving in public.

A statement from the International Hantavirus Society and dozens of hantavirus researchers is a great example of science communication in motion. 🧵

For years, Andes virus person-to-person transmission has been discussed with caution and caveats.

Not because there was no evidence — but because the epidemiology is complicated, outbreaks are relatively rare, and shared environmental exposure can be difficult to fully exclude.

What’s notable about this is how clearly the language has shifted.

The authors write that person-to-person transmission of Andes virus:

“should no longer be regarded as merely hypothetical or unproven.”

That’s a field publicly clarifying where the weight of evidence now sits.

Importantly, they are not saying Andes virus behaves like measles or COVID.

The statement repeatedly emphasizes:
close/prolonged contact
lack of efficient community spread
and context-specific transmission dynamics

Nuance didn’t disappear. The consensus became more explicit.

To me, this is a good reminder that science isn’t just:
“finding facts.”

It’s also an ongoing process of calibrating confidence, refining language, and deciding when evidence has become strong enough that the way we talk about something should change.

That’s science in action.

And honestly, watching this process unfold in public can feel confusing.

The language changes. Different experts emphasize different parts of the evidence.

But that doesn’t necessarily mean the science is broken.

Sometimes it means you’re watching consensus form in real time.

Here's the statement published today.
zenodo.org/records/200954…