January 23, 2026

Flu Shots & Vaccines for Women TTC or Pregnant

Pregnant women and those trying to conceive should get the flu vaccine to reduce risks. The injectable flu shot is safe at any pregnancy stage, while intranasal vaccines are not recommended. Vaccines like MMR and varicella require preconception administration, and thimerosol in vaccines poses no harm.


Key Takeaways

Flu Shot Safety for Women Trying to Conceive or Pregnant

The injectable flu vaccine (inactivated virus) is safe during pregnancy and while trying to conceive. Avoid the intranasal flu vaccine (live attenuated virus), which is contraindicated for pregnant women.

Thimerosol in Vaccines: Debunking Pregnancy Myths

Thimerosol, a vaccine preservative once feared for harm, has no proven risks for pregnant women or their offspring. Modern evidence confirms its safety during pregnancy and preconception.

Vaccines to Avoid During Pregnancy: MMR, Varicella, Herpes Zoster

Live attenuated vaccines like MMR, varicella, and herpes zoster should be administered at least one month before conception. Pregnancy must be avoided for one month after the final dose of these vaccines.

Preconception Vaccination Checklist for a Healthy Pregnancy

Review immunization status with a healthcare provider before conception. Key vaccines include hepatitis A/B, Td, and meningococcus, as recommended by the CDC.

How Maternal Vaccines Protect Newborns from Infections

Maternal vaccinations during pregnancy transfer passive immunity to newborns, reducing their risk of infections like influenza. Preconception immunizations also enhance uterine infection resistance.


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