Avian flu: Birds, cows, and now a human

What do we know? What do we not know?

There has been much in the news about dairy cows in Texas getting sick with avian influenza, and now a human is sick. Here is what we know, what we don’t know, and what this may (or may not) mean.

The avian flu timeline is accelerating 

The version of bird flu, or avian flu, that is making the news has existed for over 20 years. We even have a name for it…