There are a couple of things.
One is that the basic character of the virus has not changed. The usual spectrum of illness, plus those, as Dr. Bennett was referring to earlier, who previously, as far as we could tell, were healthy who succumb or get seriously ill with this virus, has not changed. We are seeing larger numbers. As we move in through the second wave, we will see more. Even once we reach the peak, there's still the other half of it. Hopefully what we'll be able to do is truncate or reduce that because of the number of people who are immunized.
In terms of the risk of infection, again, as I said, the very young are at much greater risk of becoming ill with this disease, but their risk of mortality is less. As we're getting more experience, we're starting to see that in, for example, the 40- to 64-year age group, what we saw in the first wave is that for those who were perfectly healthy before, their risk of dying is somewhere between one in 20,000 to one in 100,000 cases, whereas if they have underlying conditions their risk of dying is more in the one per 400 to one in 2,000. Those are not necessarily severe underlying conditions. It could be somebody with well-controlled asthma.
It is something, though, that really does concern us in terms of being able to afford effective treatment and, ultimately, to immunize as many as possible in order to avoid that.