Pertussis, commonly called whooping cough, is a serious respiratory infection that requires careful treatment and management. While the characteristic violent coughing fits can last for weeks or months, early intervention with antibiotics and vaccination remain the most important tools for controlling this highly contagious disease and preventing its spread to vulnerable populations, especially infants.

What Treatment for Pertussis Actually Aims to Achieve

The main goals of treating pertussis go beyond just stopping the cough. Healthcare providers focus on shortening the period when a person can spread the bacteria to others, reducing the severity of symptoms when treatment starts early, preventing serious complications, and protecting the most vulnerable members of the community. Treatment strategies differ based on how long someone has been sick, their age, and whether they have other health conditions that could make the infection worse.^[1]

Medical societies and health organizations around the world have developed standard approaches to treating whooping cough based on decades of research and clinical experience. At the same time, scientists continue exploring new ways to manage this persistent disease through clinical studies. While pertussis vaccines have dramatically reduced the number of severe cases since the 1940s, the illness has not disappeared, and recent years have seen an increase in reported cases across the United States and globally.^[5]

Treatment must be started as quickly as possible, ideally within the first week or two of illness, before the severe coughing stage begins. When antibiotics are given early, they can make the disease less serious and help patients recover more quickly. However, treatment effectiveness depends heavily on timing—once the paroxysmal coughing stage has fully developed, antibiotics will still stop the spread to others but may not significantly reduce the duration or intensity of the cough itself.^[10]

Standard Medical Treatment for Whooping Cough

The foundation of pertussis treatment consists of antibiotics that target the Bordetella pertussis bacteria responsible for the infection. These bacteria are only found in humans and spread extremely easily from person to person through tiny droplets released when someone coughs or sneezes. When a person with whooping cough is not treated, they can remain contagious for at least two weeks after coughing begins, and sometimes up to three weeks.^[1]

Healthcare providers typically prescribe antibiotics from the macrolide group, which includes three main options. Azithromycin is the most commonly recommended choice because it is well-tolerated and convenient to take—usually just five days of treatment. Alternatively, doctors may prescribe clarithromycin or erythromycin, though these require longer treatment periods, typically seven to fourteen days. For patients who cannot take macrolides or when antibiotic resistance is suspected, trimethoprim-sulfamethoxazole serves as an effective alternative for people two months of age and older.^[11]

The choice of which antibiotic to use depends on several factors. Doctors consider the patient’s age, whether they have experienced side effects from antibiotics in the past, potential interactions with other medications they are taking, and local patterns of antibiotic resistance. For infants younger than one month, macrolides must be used with extra caution because erythromycin and azithromycin have been linked to a rare but serious stomach condition called infantile hypertrophic pyloric stenosis. Despite this risk, azithromycin remains the preferred treatment for very young infants because the danger posed by untreated pertussis far outweighs the potential complications from the antibiotic. Healthcare providers carefully monitor these tiny patients for any signs of problems.^[11]

For patients to get the full benefit, they must take the entire course of antibiotics exactly as prescribed. Starting treatment within the first one to two weeks of illness—during what doctors call the catarrhal stage, when symptoms still resemble a common cold—offers the best chance of reducing symptom severity. After three weeks of coughing, antibiotics generally will not improve symptoms or shorten the illness because by that point the bacteria have already left the body, even though the cough continues. The airways have been damaged and need time to heal.^[10]

Beyond antibiotics, treatment also involves managing symptoms at home and, for severe cases, in the hospital. Most people can handle whooping cough at home with supportive care. Patients should rest as much as possible, drink plenty of fluids to prevent dehydration, eat small frequent meals since large meals may trigger coughing or vomiting, and avoid irritants like smoke, dust, and chemical fumes that can provoke coughing fits. Using a cool mist humidifier helps loosen mucus and may soothe the cough. However, over-the-counter cough medicines are generally not recommended, especially for children under four years old, because they usually do not help with pertussis cough.^[10]

Some patients, particularly infants and those with severe symptoms or complications, require hospitalization. Hospital treatment focuses on keeping breathing passages clear, monitoring breathing and providing supplemental oxygen when needed, preventing or treating dehydration through intravenous fluids, and carefully watching for complications. Babies may need continuous monitoring of their heart rate, breathing rate, and oxygen levels, especially during and after coughing episodes. Medical staff also track feeding, vomiting, weight changes, and overall clinical progress.^[16]

Preventive Treatment for People Exposed to Pertussis

One of the most important strategies for controlling pertussis involves giving antibiotics to people who have been exposed to someone with the disease, even before they develop symptoms themselves. This approach, called postexposure antimicrobial prophylaxis or PEP, helps prevent new infections from developing and stops the chain of transmission in families and communities.^[1]

Health departments and healthcare providers generally recommend PEP for certain high-priority groups. These include infants younger than 12 months old, who face the greatest risk of severe illness and death from pertussis. Pregnant women in their third trimester also receive priority because they will soon have close contact with a newborn baby who could become seriously ill. Anyone with health conditions that weaken the immune system or cause significant lung problems may also need preventive antibiotics. Additionally, people who have direct contact with any of these high-risk individuals—such as household members, childcare providers, or healthcare workers—should receive PEP to protect vulnerable people in their lives.^[14]

The same antibiotics used to treat active pertussis infections are prescribed for prevention. Azithromycin remains the first choice for PEP in most situations. The timing of preventive treatment matters significantly—it works best when given within 21 days of exposure to someone with whooping cough. For certain very high-risk situations, such as pregnant women in late pregnancy or infants under one year old, healthcare providers may consider extending the window for starting preventive antibiotics up to six weeks after exposure.^[14]

Clinical Research into New Pertussis Treatments

While antibiotics effectively eliminate the pertussis bacteria from the body, they do little to ease the violent coughing that causes so much distress, especially when treatment begins after the paroxysmal stage has started. This limitation has prompted researchers to investigate other treatments that might reduce cough severity and help patients feel better faster. Clinical trials have explored several different approaches, though results have been mixed.^[13]

Scientists have studied medications that affect the immune system and inflammation. Corticosteroids, powerful anti-inflammatory drugs, were tested based on the theory that they might reduce airway swelling and calm the cough reflex. Some small studies suggested possible benefits, but when researchers combined data from multiple trials, they found no clear evidence that corticosteroids significantly reduced cough severity, hospitalization length, or other outcomes in children with whooping cough. The evidence was insufficient to make strong recommendations about using these medications routinely.^[13]

Respiratory medications like beta2-adrenergic agonists—the same type of drugs used to treat asthma—were investigated because they help open airways and might ease breathing during coughing fits. However, clinical trials failed to demonstrate that these medications provided meaningful relief from pertussis symptoms. Similarly, antihistamine medications, sometimes used for coughs from other causes, did not show significant benefit in pertussis patients when studied in clinical research.^[13]

Another approach tested in some studies involved giving pertussis-specific immunoglobulin, which contains antibodies against the pertussis bacteria collected from people who have recovered from the infection or been vaccinated. The idea was that these antibodies might help fight the infection more quickly or reduce inflammation. However, when researchers analyzed the available evidence, they found the quality of studies was too limited to draw firm conclusions about whether this treatment actually helps.^[13]

More recently, scientists have considered whether medications called leukotriene receptor antagonists (LTRAs), which are used to treat asthma and reduce inflammation in airways, might help pertussis patients. These drugs work differently than corticosteroids by blocking specific chemical signals involved in inflammation. While this approach seems theoretically promising, clinical research has not yet established whether LTRAs provide real benefits for people suffering from whooping cough.^[13]

The lack of effective treatments to reduce cough severity represents one of the biggest challenges in pertussis management. Most of the distress and complications patients experience come directly from the intense, prolonged coughing episodes. Current research continues to search for medications or therapies that might offer relief beyond what antibiotics alone can provide. Until such treatments are proven effective, supportive care and prevention through vaccination remain the most important tools available.^[13]

Vaccination as the Primary Prevention Strategy

While vaccination is technically a prevention measure rather than a treatment, it represents such a critical part of the overall approach to pertussis that no discussion of managing this disease would be complete without addressing it. Vaccines are by far the most effective way to prevent whooping cough from developing in the first place.^[1]

Two types of pertussis-containing vaccines are used in the United States. For babies and young children, doctors give DTaP vaccine, which protects against diphtheria, tetanus, and pertussis. The standard schedule includes five doses: at 2, 4, 6, and 15-18 months of age, with a final dose at 4-6 years old. For adolescents and adults, a different formulation called Tdap is used, which contains lower amounts of diphtheria and pertussis components. Everyone 11 years or older should receive at least one dose of Tdap.^[8]

One particularly important vaccination recommendation involves pregnant women. Every pregnant person should receive a Tdap vaccine during the third trimester of each pregnancy, ideally between 27 and 36 weeks. This timing allows the mother’s immune system to produce antibodies that pass to the baby before birth, providing crucial protection during the first few months of life when infants are too young to be fully vaccinated themselves and most vulnerable to severe pertussis complications.^[1]

An earlier strategy called “cocooning”—vaccinating all family members and close contacts of newborns to create a protective barrier around the baby—is no longer emphasized as the primary prevention approach. Research showed that even vaccinated people can still contract and transmit pertussis, making maternal vaccination during pregnancy more reliable for protecting newborns. However, keeping household members up to date with pertussis vaccination still provides additional layers of protection.^[21]

Most common treatment methods

• Antibiotic therapy
  • Azithromycin (macrolide antibiotic) for 5 days, considered the preferred choice for most patients including infants
  • Clarithromycin (macrolide antibiotic) for 7 days as an alternative option
  • Erythromycin (macrolide antibiotic) for 14 days, though less commonly used due to longer duration
  • Trimethoprim-sulfamethoxazole as an alternative when macrolides cannot be used, for patients 2 months and older
• Supportive care at home
  • Rest and adequate fluid intake to prevent dehydration
  • Small, frequent meals to reduce vomiting risk
  • Cool mist humidifier to help loosen mucus and soothe cough
  • Avoiding environmental irritants like smoke, dust, and chemical fumes
  • Taking prescribed antibiotics exactly as directed for the full course
• Hospital treatment for severe cases
  • Continuous monitoring of breathing, heart rate, and oxygen saturation
  • Supplemental oxygen therapy when breathing difficulties occur
  • Intravenous fluids to manage dehydration
  • Keeping airways clear through suction or other methods
  • Close observation for complications like pneumonia, seizures, or apnea
• Preventive antibiotic treatment (prophylaxis)
  • Same antibiotics used for treatment given to exposed high-risk individuals
  • Administered to household contacts of infected patients
  • Given to infants under 12 months who have been exposed
  • Provided to pregnant women in third trimester after exposure
  • Most effective when started within 21 days of exposure
• Vaccination
  • DTaP vaccine series for infants and children (5 doses total from 2 months through 6 years)
  • Tdap vaccine for adolescents at age 11-12 years
  • Tdap vaccine for all adults who have not received it
  • Tdap vaccine during each pregnancy between 27-36 weeks gestation
  • Booster doses every 10 years to maintain protection