|a patient with pertusis|
an infected person sneezes or coughs tiny droplets containing bacteria more through the air, the disease is easily spread from persons to person. The infection usually last 6weeks.
It can affect people of any age .Before vaccines were widely available, the disease was most common in infant and young children. Now that most children are immunized before entering school,the high percentage of cases is seeen among adolescent / adult.
The bacterium which causes whooping cough can be killed by antibiotics.However, a course of antibiotics is still usually given if the disease is diagnosed in the first few weeks of the illness.