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.
Converting Gallons and Liters. As stated above, one US gallon consists of about 3.785 liters. It means that to convert metric liters to US liquid gallons, you should multiply liters by 0,264. If you want to know how many liters are in some number of gallons, you need to multiply gallons by 3.785.