Whooping cough, also called pertussis, is very easy to catch (infectious). It is a bacterial infection of the lungs and airways. It is spread in the droplets of the coughs or sneezes of someone with the infection.
- The first symptoms of whooping cough are similar to those of a cold, such as a runny nose, red and watery eyes, a sore throat, and a slightly raised temperature.
- Intense coughing bouts start about a week later.
- The bouts usually last a few minutes at a time and tend to be more common at night.
- Coughing usually brings up thick mucus and may be followed by vomiting.
- Between coughs, you or your child may gasp for breath – this may cause a ‘whoop’ sound, although not everyone has this.
- The strain of coughing can cause the face to become very red, and there may be some slight bleeding under the skin or in the eyes.
- Young children can sometimes briefly appear blue – this often looks worse than it is and their colour should return to normal quickly.
- In very young babies, the cough may not be particularly noticeable, but there may be brief periods where they stop breathing.
- The bouts will eventually start to become less severe and less frequent over time, but it may be a few months before they stop completely.
Whooping cough can affect people of any age, including:
- babies and young children – young babies under 6 months of age are at a particularly increased risk of complications of whooping cough
- older children and adults – it tends to be less serious in these cases, but can still be unpleasant and frustrating
- people who’ve had whooping cough before – you’re not immune to whooping cough if you’ve had it before, although it tends to be less severe the second time around
- people vaccinated against whooping cough as a child – protection from the whooping cough vaccine tends to wear off after a few years
You can get whooping cough if you come into close contact with someone with the infection.
A person with whooping cough is infectious from about 6 days after they were infected – when they just have cold-like symptoms – until three weeks after the coughing bouts start.
Antibiotic treatment does not stop the cough but can reduce the length of time someone is infectious and stop the spread.