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Last updated: April 8, 2026

Quick Answer: Yes, pregnant individuals can and should get the Tdap vaccine. It is recommended during each pregnancy, ideally between 27 and 36 weeks gestation, to provide passive immunity to the newborn against pertussis (whooping cough). This protection is crucial as infants are too young to be vaccinated themselves during their first few months of life.

Key Facts

Tdap vaccine is recommended for pregnant individuals between 27 and 36 weeks of gestation in each pregnancy.
The vaccine protects the newborn against pertussis (whooping cough) through passive immunity.
Infants are too young to receive their own pertussis vaccine in the first few months of life, making maternal vaccination critical.
Tdap protects against tetanus, diphtheria, and pertussis.
The vaccine is safe for both the pregnant person and the developing fetus.

Overview

The Tdap vaccine is a combination immunization that protects against three serious bacterial diseases: tetanus, diphtheria, and pertussis (whooping cough). Tetanus is a serious infection that causes painful muscle tightening and can lead to a 'locked jaw.' Diphtheria is a contagious disease that can cause breathing problems, heart failure, and paralysis. Pertussis is a highly contagious respiratory disease characterized by severe coughing fits, which can be life-threatening for infants.

For pregnant individuals, receiving the Tdap vaccine is a critical step in safeguarding the health of their newborn. While routine childhood immunizations protect infants once they are old enough, there is a vulnerable period in the first few months of life before they can receive their own pertussis vaccination. Maternal immunization during pregnancy effectively transfers antibodies to the fetus, offering crucial protection during this susceptible time.

How It Works

Passive Immunity Transfer: When a pregnant person receives the Tdap vaccine, their body produces antibodies against tetanus, diphtheria, and pertussis. These antibodies can then cross the placenta and be transferred to the developing fetus. This process, known as passive immunity, provides the newborn with a level of protection against these diseases immediately after birth.
Protection Against Pertussis: Pertussis is particularly dangerous for infants, as their immune systems are still developing and they are more susceptible to severe complications such as pneumonia, seizures, brain damage, and even death. The antibodies received from the mother are most effective in preventing severe illness and hospitalization from pertussis during the first few months of life.
Timing of Vaccination: The Centers for Disease Control and Prevention (CDC) recommends that pregnant individuals receive the Tdap vaccine during each pregnancy, ideally between the 27th and 36th week of gestation. This specific window ensures that antibody levels are high enough in the mother at the time of delivery to provide optimal protection to the infant.
Safety Profile: Extensive research and clinical trials have demonstrated that the Tdap vaccine is safe for both the pregnant person and the developing fetus. The benefits of preventing serious and potentially fatal diseases in newborns far outweigh any minimal risks associated with the vaccine. It is not a live vaccine, meaning it cannot cause the diseases it protects against.

Key Comparisons

Aspect	Tdap Vaccine (During Pregnancy)	Other Vaccines for Pregnant Individuals
Primary Goal	Prevent pertussis in newborns; provide tetanus and diphtheria protection.	Prevent influenza, COVID-19, and other specific infections.
Recommended Timing	27-36 weeks gestation in EACH pregnancy.	Varies by vaccine; influenza typically in fall/winter; COVID-19 as recommended.
Specific Benefits for Newborn	Directly provides antibodies to protect against pertussis in the first few months of life.	Indirect protection through maternal health maintenance; some antibodies may transfer for other diseases.
Target Diseases	Tetanus, Diphtheria, Pertussis.	Influenza virus, SARS-CoV-2, etc.

Why It Matters

Impact on Infant Mortality: Pertussis outbreaks can have devastating consequences for infants. Maternal vaccination has been a cornerstone in reducing infant deaths and severe illness attributed to whooping cough. Before the widespread use of pertussis vaccines and maternal immunization strategies, pertussis was a leading cause of infant mortality.
Preventing Severe Illness: The protection offered by the Tdap vaccine significantly reduces the likelihood of infants contracting a severe case of pertussis. This means fewer hospitalizations, less need for mechanical ventilation, and a lower risk of long-term complications. It allows infants to build their own immunity through their childhood vaccination series without facing the gravest risks.
Protecting Healthcare Workers and Families: By ensuring immunity in newborns, the Tdap vaccine also indirectly protects the immediate environment around the infant, including parents, siblings, and caregivers who might otherwise unknowingly transmit the highly contagious bacteria. This creates a protective cocoon around the vulnerable baby.

In conclusion, the Tdap vaccine is a highly recommended and safe immunization for pregnant individuals. It is a vital public health intervention that plays a crucial role in protecting newborns from the potentially life-threatening effects of pertussis, while also offering protection against tetanus and diphtheria. Discussing the Tdap vaccine with a healthcare provider is an essential part of prenatal care, ensuring the best possible start for the new baby.