What can whooping cough look like in a baby?

What does the evidence show for whooping cough in babies?

• Early pertussis can resemble a mild cold, but infants may have little or no cough and instead develop apnea. Lack of a whooping sound does not make the illness unlikely enough to ignore breathing changes. Babies are at particular risk of serious complications. 1
• Infants are a high-risk group, and clinicians may start care before test results when the history strongly suggests pertussis. Antibiotic choice depends on age and other considerations. Prompt assessment matters; parents should not wait for a cough to become classic or use leftover antibiotics. 2
• Known exposure needs timely advice even if the baby currently looks well. CDC supports targeted postexposure antibiotics for high-risk people and relevant contacts, including household contacts. Vaccination status does not remove the need to discuss a confirmed exposure. 3
• Babies need the recommended DTaP series, and pregnancy Tdap helps support protection during the earliest months. Neither measure guarantees every exposure is harmless. A symptomatic baby still needs assessment, and the pediatric team should confirm remaining vaccine doses. 4
• Coughing spells can be followed by vomiting or exhaustion, and recovery may take weeks. A baby who seems better between spells can still have a serious illness. Worsening breathing, poor intake or difficulty waking should prompt reassessment rather than simply waiting out the cough. 1

When should I call my provider about whooping cough in babies?

Call emergency services for blue or gray coloring, severe breathing difficulty, breathing pauses or an unresponsive baby. Seek prompt pediatric advice for a known pertussis exposure or concerning cough. If unresponsive and not breathing normally, follow dispatcher CPR instructions.