Considering this, who created the strain?
Robert K. Merton
Likewise, when was the strain made? July 13, 2014
Thereof, why was the strain Cancelled?
The show is not being "cancelled," its creators insist — in a statement, Cuse notes that the series was originally envisioned to last for three seasons, but was expanded to a fourth to properly conclude the story. "It is a true joy to work at FX where creative intentions always come first," said Cuse.
Is the strain about vampires?
You're not going to see a six-pack, pale, beautiful vampire talking about how lonely he is. These are brutal, parasitic vampires." The Strain is based on a series of novels written by del Toro and his collaborator Chuck Hogan, who has described the process of bringing them to TV as "really fun".