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.[10][1] 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.
During this second paroxysmal stage, there are extremely intense episodes of coughing, often called paroxysms of coughing. Symptoms include: In adults and teenagers, whooping cough paroxysmal symptoms are less severe than in babies and young kids-they are usually similar to the symptoms found in bronchitis.In very rare cases, whooping cough can cause sudden unexpected death in babies.hooping cough symptoms usually appear between six to twenty days after the Bordetella pertussis bacterium has infected the patient, in other words, pertussis has 6-to-20 day incubation period. The illness starts off with mild symptoms, which then get much worse before improving.