For many, the “whoop” of pertussis is a sound associated with childhood medical history or pediatric wards. However, a sharp rise in cases across England is revealing a more complex reality: whooping cough in UK adults is becoming a significant public health concern, often hiding in plain sight as a persistent, “never-ending” cough.
Recent data from the UK Health Security Agency (UKHSA) indicates a staggering surge in infections, with cases in England rising by over 1,600% in 2024 compared to the previous year. While the disease remains most dangerous for infants, the surge is highlighting a critical gap in adult immunity and diagnostic awareness.
As a physician, I have seen how easily “just a cough” can be dismissed in an adult patient. But when that cough lasts for weeks or months, it may not be asthma or a lingering cold. It could be a highly contagious bacterial infection that the patient is unknowingly spreading to the most vulnerable members of their family.
The ‘Invisible’ Infection in Adults
Whooping cough, clinically known as pertussis, is caused by the bacterium Bordetella pertussis. In infants, the disease is characterized by violent coughing fits followed by a high-pitched “whoop” as the child gasps for air. In adults, however, the presentation is often far more subtle.
Professor Andrew Preston, a microbiologist at the University of Bath, notes that while the disease was traditionally viewed as a pediatric ailment, it is increasingly clear that adults are frequently affected. For these patients, the hallmark “whoop” is often absent, replaced instead by a chronic, hacking cough that resists standard treatments.
This lack of classic symptoms creates a diagnostic blind spot. Many adults may have always been susceptible to the bacteria, but because they did not exhibit the textbook signs of the disease, general practitioners may not have tested for it, leading to a significant undercounting of adult cases in previous years.
Why Adult Cases Pose a Pediatric Risk
While pertussis is generally less severe in healthy adults—though it can still lead to complications like rib fractures, hernias, or incontinence due to the force of the coughing—the primary danger lies in transmission. Adults often serve as the unwitting reservoir for the bacteria, passing it to babies through coughs and sneezes.
For infants under 12 months, whooping cough can be catastrophic. Because their airways are small and their immune systems are underdeveloped, they are at a high risk of developing pneumonia, fits (seizures) and severe breathing difficulties. In the most severe cases, babies under six months may require urgent hospital treatment to survive.
The risk is particularly acute for newborns who have not yet completed their primary vaccination series. Here’s why protecting the “cocoon” around a baby—ensuring parents and caregivers are immune—is a cornerstone of public health strategy.
The Challenge of Waning Immunity
The UK’s vaccination program provides robust protection during childhood through the six-in-one vaccine and the four-in-one pre-school booster. However, these vaccines do not provide lifelong immunity.
Professor Preston suggests that while the childhood vaccines are potent and protect children from the most severe forms of the illness, the immunity they provide wears off over time. By the time a person reaches adulthood, the protective effects have often diminished, leaving them susceptible to infection and capable of spreading the bacteria to others.
To combat this, the NHS recommends that pregnant women receive a vaccination, typically around the 20th week of pregnancy. This allows the mother to pass essential antibodies to the fetus, providing a critical layer of protection for the baby during the first few months of life before they can be vaccinated themselves.
Recognizing Symptoms and Seeking Care
Identifying whooping cough early is key to reducing transmission. The infection typically begins with symptoms resembling a common cold—a runny nose and a sore throat. Over time, this evolves into bouts of intense coughing that may last for several minutes and often worsen at night.
The following table summarizes the differences in how the disease typically manifests across different age groups:
| Symptom/Feature | Infants (<. 1 year) | Adults & Older Children |
|---|---|---|
| Primary Sign | Severe coughing fits, “whooping” sound | Chronic, persistent cough |
| Risk Level | High (Pneumonia, Apnea) | Moderate (Rib fractures, fatigue) |
| Early Symptoms | Mild cold-like symptoms | Runny nose, sore throat |
| Critical Warning | Blue/grey skin, difficulty breathing | Chest pain, severe exhaustion |
If a child’s lips, tongue, or skin turn blue or grey, or if they experience fits or severe difficulty breathing, it is a medical emergency. In the UK, these individuals should immediately call 999 or attend an A&E department.
For those diagnosed, antibiotics can be effective if administered within two weeks of the cough starting. While antibiotics may not always shorten the duration of the cough, they are vital for stopping the spread of the bacteria to others. Supportive care, including plenty of rest, hydration, and the use of paracetamol or ibuprofen for discomfort, is recommended. Aspirin should never be given to children under 16.
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
The UKHSA continues to monitor pertussis levels across the country, with ongoing surveillance aimed at identifying new clusters and assessing the effectiveness of the current pregnancy vaccination rollout. Public health officials are expected to provide updated case numbers and guidance as the 2024 data is fully analyzed.
Do you or your family have questions about pertussis boosters? Share your thoughts or experiences in the comments below.
