Antibiotics will stop you being infectious after 5 days of taking them. However, without antibiotics, you may still be infectious until 3 weeks after your intense bouts of coughing start.
If whooping cough is not diagnosed until the later stages of the infection, your doctor may not prescribe antibiotics. This is because the bacterium that causes whooping cough has already gone by this time, so you are no longer infectious. Antibiotics will make no difference to your symptoms at this stage.
Treating babies and young children
Babies are affected most severely by whooping cough, and are most at risk of developing complications. For this reason, babies under 12 months who contract whooping cough will often need to be treated in hospital.
If your child is admitted to hospital to be treated for whooping cough, it is likely they will be treated in isolation. This means they will be kept away from other patients to prevent the infection spreading.
Your child may need to be given antibiotics or steroids intravenously (straight into a vein through a drip).
If your child needs additional help with breathing, they may be given extra oxygen through a facemask. A handheld device called a bulb syringe may also be used to gently suction away any mucus that is blocking their airways.
Learn more here about the development and quality assurance of healthdirect content.
Last reviewed: March 2019