Whooping Cough Isn't Just for Kids: The Adult Symptoms Doctors See

Pertussis, commonly known as whooping cough, often brings to mind images of infants gasping for air. But whooping cough in adults is real—and it can be just as disruptive. Understanding the signs, getting an accurate diagnosis and seeking timely treatment can make a big difference in your recovery and help prevent spreading the infection to others.

What Is Whooping Cough?

Whooping cough is a highly contagious respiratory infection caused by the bacterium Bordetella pertussis. It spreads through droplets when an infected person coughs or sneezes. While vaccination has dramatically reduced cases in children, immunity from the vaccine or past infection can fade over time, leaving many adults vulnerable.

Key facts:

• Incubation period: 7–10 days (can range from 5–21 days)
• Transmission: Coughing, sneezing, close contact
• Contagious period: About 2 weeks from onset of cough or until 5 days after starting antibiotics

Why Adults Still Get Whooping Cough

• Waning immunity: Vaccine protection decreases after 5–10 years.
• Mild or atypical symptoms: Adults may have a prolonged cough without the classic "whoop," making diagnosis challenging.
• Underdiagnosis: Symptoms are often mistaken for bronchitis, allergies or a lingering cold.

Because adults tend to have less dramatic symptoms than children, whooping cough in adults can go unrecognized—allowing further spread.

Recognizing Adult Symptoms

Adult symptoms often fall into three stages, but not everyone experiences all of them.

1. Catarrhal Stage (1–2 weeks)

   • Runny nose
   • Mild cough
   • Low-grade fever
   • Fatigue

2. Paroxysmal Stage (1–6 weeks, sometimes longer)

   • Severe coughing fits (paroxysms)
   • Difficulty catching breath between coughs
   • Post-​cough "whoop" is less common in adults
   • Vomiting after coughing
   • Exhaustion

3. Convalescent Stage (weeks to months)

   • Gradual reduction of coughing fits
   • Lingering cough that can be triggered by cold air, laughter or exercise

Because the hallmark "whoop" may be absent, a persistent cough lasting more than two weeks—especially with paroxysms or vomiting—should raise suspicion for pertussis.

Possible Complications in Adults

Though serious complications are more common in infants, adults can experience:

• Rib fractures from intense coughing
• Pneumonia
• Weight loss and dehydration (from repeated vomiting)
• Sleep disturbance and profound fatigue
• Worsening of underlying conditions (e.g., asthma, heart disease)

Pregnant women with pertussis risk passing the infection to newborns, who are most vulnerable.

Diagnosing Whooping Cough in Adults

If you suspect whooping cough in adults, prompt diagnosis is key:

• Clinical evaluation: Review of symptoms, cough duration and possible exposure.
• Laboratory tests:
  • PCR (polymerase chain reaction) swab—most reliable in first 3 weeks of cough
  • Culture of nasopharyngeal specimen
  • Blood tests for pertussis antibodies (useful after 3 weeks of cough)

If you're experiencing a persistent cough and want to understand your symptoms better, you can check your symptoms with a free AI-powered assessment tool to help determine whether you should contact your doctor about possible pertussis.

Treatment Options

Early antibiotic therapy can:

• Reduce symptom severity
• Shorten contagious period
• Prevent spread to others

Common antibiotics:

• Azithromycin
• Clarithromycin
• Erythromycin
• Trimethoprim-sulfamethoxazole (for those who can't take macrolides)

Supportive care:

• Stay hydrated
• Use a humidifier to soothe airways
• Rest frequently
• Consume small, frequent meals if vomiting occurs

Even after antibiotics, the cough may linger for weeks. Patience and self-care are essential.

Prevention and Vaccination

Vaccination remains the cornerstone of pertussis prevention:

• Tdap booster: Recommended once for adults 19–64 years who haven't had a booster since adolescence.
• Pregnancy: One dose of Tdap during each pregnancy (27–36 weeks) to protect newborns.
• Cocooning: Ensuring close contacts (family, caregivers) are up to date on Tdap to shield infants.

Good hygiene—covering coughs, frequent handwashing and avoiding close contact when sick—also helps reduce transmission.

When to Seek Medical Help

Contact a healthcare provider if you experience:

• A cough lasting more than two weeks with paroxysms or vomiting
• Difficulty breathing, chest pain or rapid heartbeat
• High fever (above 101°F/38.3°C)
• Signs of dehydration (dry mouth, dark urine, dizziness)
• Worsening of underlying lung or heart conditions

In emergencies—such as severe difficulty breathing or coughing fits that don't stop—call 911 or go to the nearest emergency department.

Speak to a Doctor

While many adults recover fully with timely treatment, whooping cough in adults can be serious. Always speak to a doctor about any symptoms that could be life threatening or require immediate care. Early detection, antibiotic therapy and supportive measures are key to a smoother recovery and protecting those around you.