Bordetella pertussis, the bacteria that causes pertussis, is contacted by it breathing in after it has been coughed or sneezed out by an infected person, especially during the catarrhal and early paroxysmal stages. Individuals are not infectious after the third week of the paroxysmal coughing. The incubation period averages 7 to 14 days. B. pertussis invades the respiratory mucosa causing increased secretion of mucus, initially thin and later viscid and not easily moved. The disease lasts about 6 weeks and has 3 clear stages:
Drosera rotundifolia (Sundew) Thymus vulgaris (Thyme) Pinguicula vulgaris (Butterbur) Prunus serotina (Wild Cherry Bark) Eryngium planum (Sea Holly)
Thymus vulgaris Drosera rotundifolia Prunus serotina Pimpinella anisum --- --- --- equal parts to 100.0g