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.
A US gallon is a unit of volume in US Customary Units. The symbol for US gallon is US gal. There are 0.26417205 US gallons in a liter. A liter is a unit of volume in the Metric System. The symbol for liter is L. There are 3.785411784 liters in a US gallon. The International spelling is litre.