Whooping cough: the cough that won't quit, in Luxembourg

Whooping cough (pertussis) is a highly contagious respiratory infection, caused by a bacterium, marked by violent, repeated coughing fits sometimes followed by a characteristic noisy gasp for air. In adults and older children it is mostly exhausting and long-lasting; in infants, however, it can be dangerous and calls for care without delay. Paediatricians follow the youngest patients, GPs the adults, and a pulmonologist gets involved if the cough drags on abnormally.

Babies first: the real danger

One thing needs saying clearly up front: in infants under six months, whooping cough can be serious. A small baby doesn't always have the strength to cough effectively enough to clear secretions, and the fits can come with pauses in breathing, a bluish tinge to the face, or visible exhaustion. Any significant coughing bout, any episode where the baby struggles to catch its breath, any change in facial colour in an infant should lead to urgent care, or a call to 112 if breathing stops, even briefly, or the baby goes limp and stops responding normally. This is exactly why the people close to a newborn — parents, grandparents, older siblings — have every reason to keep their own vaccination up to date: protecting the adults around a baby is how you protect the baby itself, who is too young to be fully vaccinated yet.

Fits that wear out even adults

In teenagers and adults, whooping cough shows up as dry, explosive coughing fits, often coming in rapid bursts, sometimes severe enough to trigger vomiting or a brief choking sensation. Between fits, the person can seem perfectly fine, which is exactly what throws people around them off. The cough classically lasts several weeks — it is sometimes called the "hundred-day cough" — well after the initial contagious period has passed. It is this unusual persistence, combined with recognisable fits, that should raise the suspicion rather than putting it down to a lingering cold.

The trap: spreading it without knowing

Whooping cough is especially contagious in the days before the characteristic cough even appears, and through the first couple of weeks after. A tired adult who has been coughing for a few days and assumes it's just a stubborn cold can unknowingly pass the bacterium on to a baby in the family. This silent transmission, by adults who don't feel particularly unwell, explains a good share of the severe cases seen in the very young. Faced with an unusually persistent cough, especially around an infant, it is better to see a doctor than to wait for it to "pass on its own".

Why boosters for adults matter

Protection from a childhood vaccination fades over the years, which is exactly why whooping cough keeps circulating among adults who assume they are covered for life. A booster is worth discussing with the GP at several points: before starting a family, ideally for anyone who will be spending time around a newborn, and during each pregnancy, since a dose given late in pregnancy passes some protection on to the baby in the weeks before its own vaccination schedule begins. None of this needs to feel complicated — a short conversation at a routine appointment is usually enough to check where things stand and whether an update makes sense.

When to consult, and who to see

In children and adults, the GP or paediatrician makes the diagnosis based on the pattern of the coughing fits and the history of the cough, sometimes confirmed with a swab taken from the back of the nose. A pulmonologist's opinion can help if the cough drags on unusually long or the diagnosis stays uncertain. In infants, though, urgency always comes before waiting: it is far better to seek care quickly, or call 112 if in doubt, than to let a situation that can worsen fast go unattended.

After diagnosis and follow-up in Luxembourg

Antibiotic treatment may be prescribed, especially if started early, mainly to cut contagiousness and shorten the course of the illness; it does not always dramatically shorten the cough itself once the fits are well established. People close to the patient — particularly if there is an infant at home — should be informed so they can watch for symptoms and, depending on the situation, discuss protection with their own doctor. Consultations, tests and treatment related to whooping cough are covered by the Caisse nationale de santé under the usual reimbursement rules; the details are set out on cns.lu. Vaccination, together with protecting the people around infants, remains the best way to limit how far the disease spreads.