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.
Adolescents and adults have accounted for more than half of reported cases of whooping cough in recent years. Adults and adolescents with pertussis (and those partially protected by the pertussis vaccine) can become infected but often have milder whooping cough symptoms. In some cases, they may have no symptoms at all.