I think this virus is a very interesting virus. It's a bit unusual in that it can spread better than SARS and the MERS coronavirus. It is the first coronavirus to cause a pandemic. It is probably a virus that has hit the sweet spot. It is not completely lethal, so there are people with mild illnesses and a range of clinical symptoms who can transmit the virus, for instance. The severe end of the spectrum is with people who are older in age and have underlying medical conditions, but there's a bulk of the illness in working-age adults. We're not seeing it much in kids.
If you looked at the full range of mild, moderate and severe and were looking at the likelihood of exposure versus the severity of the disease, this is hitting at about a moderate or medium scenario. However, viruses always have surprises, which is why we have to keep monitoring it. It may change the trajectory.