evidence: Several studies have shown that messenger RNA (mRNA) COVID-19 vaccines do not cause complications in pregnancy, either for expectant mothers or their babies. [...] Like all mRNA molecules, the mRNA in the COVID-19 vaccines is broken down by cell mechanisms and so spends a relatively short time in the body. [...] The companies marketing mRNA COVID-19 vaccines are carrying out more animal and laboratorystudies to obtain additional data on how mRNA and the spike protein are distributed and broken down in the body. They will submit the results to EMA for assessment.