Betty Habditch talking to me earlier and I'm pleased to say she's back at work and her daughter will be back at school soon. Well Grace may have been given the all clear but what if the test had shown that she had the new strain of flu? How dangerous is it? And how effective are the antiviral drugs that we have been stockpiling?
Dr Brian McCloskey What evidence do we have, first of all, that Tamiflu actually makes any difference - because presumably it can't have been tested against this new strain - so called swine flu?
We've two reasons to be optimistic about that. One is the practical experience that we're hearing from in America and Canada and other places where it does seem to have been effective, but also testing in the laboratory, we can do what's called antiviral resistance testing and that seems to show that this particular strain is susceptible to the antivirals.