San Francisco?
You don’t say.
What could be going on in San Francisco that leads to a brand new highly contagious virus?
The orangatang virus?
My first thought.
Human Metapneumovirus is not new. It’s part of the cavalcade of ssRNA respirator viruses that continue to evolve as it interacts with human populations and their immune responses to it.
All part of cold and flu season. Not new at all.