This odd exchange took place at today’s press conference with the U.S. Centers for Disease Control and Prevention (CDC).

David Brown, The Washington Post: There’s a report that there is yet another new H1N1 virus that has been found in the states of Durango, Zacatecas, and Jalisco that is distinct from both this swine H1N1 and the seasonal Brisbane H1N1. Have you heard of this and can you tell us anything about this?

Daniel Jernigan, CDC’s deputy director of influenza division: We’ve heard of some reports about that, but I’ve not had any direct information about the specifics of that case. There’s ongoing dialog between us and the folks that are in Mexico, and as we know more about that, we’ll be able to let people know.

ScienceInsider is investigating but has yet to learn anything substantive. It was aired in a public venue, though, and likely will receive media attention, regardless of whether it turns out to be false.

-Jon Cohen

Update (6:44EDT, 15 May): “We heard a rumor but think it may be a misinterpretation of some lab data by a non-lab person,” Nancy Cox, head of CDC’s influenza division, tells ScienceInsider. “We are following up.”