"But these particles are irregular, and too big!"
He nodded.
"What about the agglutination tests?"
"It isn't A, B or C," he said. "It's a new virus, or at least one I've never heard of. There doesn't seem to be a relationship to any other flu virus ... and probably no immunity to it either."
"Then how do you know it is flu?"
"Only by the way it acts clinically. It fits the flu syndrome better than any other disease we can think of. Odd thing about this stuff," he mused, "as you can see, these first electron pictures don't look like flu and the Biochemistry Section also reports some unusual components in its chemical structure."
He stopped to light his pipe. "You remember how I broke up those simple plant viruses a few years ago and tried putting different pieces of them back together to make new ones?" He mumbled around his pipestem, blowing a little cloud of blue smoke with each word.
I hadn't been at the Civic at that time but I nodded in affirmation, not wanting to interrupt his train of thought.
"Well, this virus isn't the same of course, but it seems to be a relatively simple one and of such a peculiar composition it makes me wonder. Certainly, so far, it doesn't fit in with any of the natural viruses I've handled."
"Maybe it's an exotic variety brought in from overseas," I ventured. "Vancouver does handle a lot of foreign shipping. Or maybe it's a wild mutation from some ordinary flu virus. Look what happened in 1957 with that A prime mutation. Perhaps this thing has gone even farther away from the family tree."