States that detect and report a new virus could also receive immediate support, which might involve shipments of medical equipment from a global stockpile.
Talks will involve delegates from six countries, representing the world's main regions - Japan, the Netherlands, Brazil, South Africa, Egypt and Thailand, officials said.
Brazil, which will represent northern and southern American countries, favours a non-binding treaty.
The EU, which will be represented by the Netherlands, wants to introduce legally-binding obligations to prevent and report new
virus outbreaks, an EU document seen by Reuters says.
If an agreement is reached, the treaty is expected to be signed in May 2024.