Might microbes, or collect call

Collect Call by J.B. Pravda

Clark Barkenwolder had won every creature-'calling' contest in the
world: hogs,turkeys, ducks, geese-----you name it; hence, when his
concept for The First Annual International Really Small
Creature-Calling Festival was rejected out of hand by the Olympic Sport
Trials Committee he quickly summoned a panoply of lethal dormant
viruses and wiped out the Committee and several billion potential
spectators who, he reasoned, had chosen not to support his innovative
idea.