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.
No one buys alcohol in half gallons - you buy it in liters. Typically you have three bottle sizes - 325 ml, 750 ml, 1.75 l Half a gallon is about 1.9 liters, and a fifth is just over 750 ml. It's about two and a half 'fifths'. 1 pint then 2=s a fifth. fifth+pint=s liter 2fifths. and or 2 fifths are close to half gallon.