The puzzle answers are as follows:
Each of these is a name or nickname for some type of horrible disease: Guinea worm, gonorrhea, a mutated cold virus also known as "boot camp flu", larva currens, and, well, the bubonic plague.
The diagram of the "virus" has five rows, with respectively one, one, three, four, and three spaces on them. Find the names of the pathogens that cause the five diseases and order them from top to bottom, taking the corresponding number of letters from the beginning of each name:
These extracted letters spell DNA DESTROYER, the solution to the metapuzzle.