Enter the size of the slab you want to build in square feet. The calculator will indicate the number of 60 lb bags you will need to build a 4 inch or 6 inch slab. (all yields are approximate and do not allow for uneven substrate, waste, etc.)
Pertussis (also known as whooping cough or 100-day cough) is a highly contagious bacterial disease. Initially, symptoms are usually similar to those of the common cold with a runny nose, fever, and mild cough. This is then followed by weeks of severe coughing fits.
According to the Centers of Disease Control and Prevention, there are three stages of whooping cough symptoms: 1  Catarrhal â After the incubation period of 5 to 10 days, on average, whooping cough symptoms begin to develop. Catarrhal symptoms include inflammation of the mucous membranes in one of the airways.