Swine flu winding down but vaccine still important –

With swine flu ebbing and immunizations still maddeningly hard to find, one might be tempted to ask: Why bother to even look for vaccine?

Experts say the answer, at least in part, is that the disease almost certainly will come back this winter – as seasonal flu.

So why are public health officials also still emphasizing immunization with the existing seasonal flu vaccine, also in short supply?

Because, they say, where influenza is concerned, predictions always contain a large element of guesswork.