We'd certainly hoped not to see it in Africa.

The evidence for widespread asymptomatic infections is just not there. The (more recent) studies that have been done, one of the reasons frankly that I think they haven't been followed up on, is they haven't found many positives. You don't get too excited about all negative serology (blood work).

It could reduce the mutation level ... you are less likely to have widespread mutation than if you had 20 strains hop-scotching across Asia.

The (more recent) studies that have been done, one of the reasons frankly that I think they haven't been followed up on, is they haven't found many positives. You don't get too excited about all negative serology (blood work).

It's very important to do this kind surveillance so that we know what's going on. And we're hopeful, since there are some clear differences, that these viruses will be made available to other investigators to do further analysis.

They're all basically the same. Nothing new and unusual. That mutation just showed up in that one patient.

We have a team arranged to go tomorrow (Saturday) or Sunday.

We don't have the genetic sequence yet but we hope to soon which should tell us if it is the same virus that we have seen in Turkey and in the region surrounding the Black Sea area, where we have seen a lot of outbreaks in the last six months.

The evidence for widespread asymptomatic infections is just not there.