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Covid-19 vaccine and its consequences in pregnancy: Brief review
Nang Kham Oo Leik1, Fatimah Ahmedy2, Rhanye Mac Guad3
1Department of Obstetrics & Gynaecology, Faculty of Medicine & Health Sciences, Universiti Malaysia Sabah, Malaysia.
Insights
mRNA COVID-19 vaccines are safe and effective for pregnant individuals, providing robust maternal and fetal antibody responses. Vaccination reduces severe illness without impacting pregnancy outcomes.
Area of Science:
- Obstetrics and Gynecology
- Immunology
- Infectious Diseases
Background:
- Pregnancy increases the risk of severe COVID-19.
- Safe and effective vaccination strategies are crucial for pregnant individuals and fetuses.
- Understanding vaccine immunogenicity and safety in pregnancy is essential.
Purpose of the Study:
- To review COVID-19 infection rates, maternal antibody responses, placental antibody transmission, and adverse events following mRNA COVID-19 vaccination in pregnancy.
- To evaluate the safety and efficacy of mRNA vaccines in pregnant populations.
- To assess the impact of vaccination timing and dosage on maternal and fetal immunity.
Main Methods:
- Systematic review of epidemiological studies on mRNA COVID-19 vaccines in pregnant individuals.
- Analysis of data on COVID-19 infection rates, antibody levels, placental transmission, and adverse events.
- Evaluation of immune responses after primary vaccination and booster doses.
Main Results:
- mRNA vaccines effectively prevent severe COVID-19 in pregnant individuals.
- Common side effects include temporary injection-site pain, fatigue, and migraine.
- Vaccination demonstrated rapid antibody responses, with booster doses enhancing adaptive immunity and placental transmission.
- Two doses led to stronger maternal and fetal antibody levels, with longer intervals to birth correlating with higher fetal IgG.
- Gestation, childbirth, and perinatal mortality were not adversely affected.
Conclusions:
- mRNA COVID-19 vaccines are safe and effective for pregnant individuals, offering significant protection against severe illness.
- Vaccination elicits protective maternal and fetal immune responses, with enhanced benefits observed after booster doses and optimal timing.
- The benefits of mRNA vaccination in pregnancy outweigh potential risks, supporting its use for maternal and fetal health.
Abstract:
Pregnancy is linked to a higher incidence of severe Covid-19. It's critical to find safe vaccinations that elicit protective pregnant and fetal immune responses. This review summarises the rate of COVID-19 infection, maternal antibodies responsiveness, placenta antibody transmission, and adverse events after COVID-19 vaccination in pregnancy studied in epidemiological studies evaluating mRNA vaccines. Potential COVID-19 infection in pregnant women can be prevented using mRNA-based vaccinations. Gestation, childbirth, and perinatal mortality were proven unaffected by COVID-19 vaccination. Injection-site discomfort, tiredness, and migraine are the most prevalent side effects, but these are temporary. After the first dosage of vaccinations, fast antibody responses were demonstrated. The adaptive immunity is found to be more significant after booster vaccination, and is linked to improved placental antigen transmission. Two vaccination doses are associated with more robust maternal and fetal antibody levels. Longer delays between the first immunization dosage and birth are linked to greater fetal IgG antibody levels with reduction in antigen transmission proportion. The mRNA vacciness are effective in reducing the severity of COVID-19 infection and these vaccinations are regarded to be safe options for pregnant women and their unborn fetus.
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