Is there any impact if pregnancy is discovered after the husband received the third dose of the COVID-19 vaccine?

Generally, if a husband receives the third dose of the COVID-19 vaccine before conception, there is minimal impact on the fetus, and no excessive concern or specific contraindications are known. If in doubt, it is recommended to consult a healthcare provider in advance. The detailed explanation is as follows:

The COVID-19 vaccine primarily acts on the recipient's immune system, stimulating antibody production. It does not enter reproductive cells nor alter genetic material. Antibodies or immune responses generated in men after vaccination are not transmitted to the fetus through reproduction, and there is currently no evidence indicating such situations increase the risk of fetal abnormalities.

If severe adverse reactions occur shortly after vaccination—such as persistent high fever or severe allergic reactions—attention should be paid to physical recovery. However, these reactions themselves are not directly linked to fetal health. Fetal development during pregnancy is influenced by multiple factors, and the vaccine is not a major risk source; therefore, pregnancy should not be unnecessarily terminated due to vaccination.

After confirming pregnancy, inform your doctor about the vaccination history and proceed with routine prenatal checkups, focusing on key indicators of fetal development. Maintain regular作息 (daily routines) and balanced nutrition during pregnancy, and avoid excessive anxiety. If any abnormalities are detected during prenatal exams, follow medical advice promptly, without assuming the vaccine is the primary contributing factor.