David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce. ...

a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce. (David Quammen)

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David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.

David Quammen Quotes: a mutation in that strain might have made it especially aggressive, efficient, transmissible, and fierce.