It made me think... The tactics of dog-piles, holds, and arm-controls predates the rampant viral infections present in the world today as much as they do the Taser.
There is very little that the people of the 21st century have over the pre antibiotics generations in the area of biological warfare.
Systematic well poisoning by retreating armies and smallpox contaminated blankets to Indians eclipse in scale and ingenuity scratches and bites by infected people.
Germ warfare never became a mainstream weapon because it is the quintessential double edged sword. No one has figured a way to deploy it without causing indiscriminate damage.