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.)
The classic symptoms of pertussis are a paroxysmal cough, inspiratory whoop, and fainting, or vomiting after coughing. The cough from pertussis has been documented to cause subconjunctival hemorrhages, rib fractures, urinary incontinence, hernias, and vertebral artery dissection.
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.