The bacterium Bordetella pertussis is the primary whooping cough cause. There are no other causes, and the infection follows no distinct seasonal pattern. People may become infected with the bacteria by breathing in tiny droplets released into the air by an infected person's cough or sneeze.
There are approximately 1,892.7 milliliters in 1 half-gallon of volume. That works out to 3,785.4 milliliters per gallon, 1.892 liters per half-gallon and 3.785 liters per gallon.
The 16.9 oz size is actually meant be a nice metric half liter (500mL), and 1 liter is 1.06 quarts. Therefore, your 16.9 oz bottle would be just over half a quart which equals one pint or 2 cups. And you may recall that there are 4 quarts to the gallon.