Vaccine exposure during pregnancy; This spontaneous prospective pregnancy case was reported by a consumer and describes the occurrence of EXPOSURE DURING PREGNANCY (Vaccine exposure during pregnancy) in a 40-year-old female patient (gravida 3, para 2) who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 001B21A and 001B21A) for COVID-19 vaccination.     The patient's past medical history included Alcohol use (1-2 drinks/week) on 29-Oct-2020, Pregnancy (Live, full-term birth) on 02-Feb-2009 and Pregnancy (Live, full-term birth) on 01-Apr-2011. Concurrent medical conditions included Asthma (Under control with rescue inhaler. Worsening during pregnancy, controlled with addition of daily steroid medication) since 1988, Allergy to molds, Seasonal allergy (Pollen, Grasses) and Allergy to animals (Cats, Dogs). Concomitant products included SALBUTAMOL SULFATE (PROAIR [SALBUTAMOL SULFATE]) from November 2020 to an unknown date and BUDESONIDE (PULMICORT FLEXHALER) from November 2020 to an unknown date for Asthma, MINERALS NOS, VITAMINS NOS (PRENATAL VITAMINS [MINERALS NOS;VITAMINS NOS]) for an unknown indication.   On 12-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 09-Apr-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. The patient's last menstrual period was in September 2020 and the estimated date of delivery was 04-Jun-2021. On 12-Mar-2021, the patient experienced EXPOSURE DURING PREGNANCY (Vaccine exposure during pregnancy). The patient received mRNA-1273 (Moderna COVID-19 Vaccine) during pregnancy.  On 12-Mar-2021, EXPOSURE DURING PREGNANCY (Vaccine exposure during pregnancy) had resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 29-Oct-2020, Pregnancy test: positive (Positive) Established pregnancy, all ok. On 07-Jan-2021, Glucose tolerance test: normal (normal) 1 hour test, all ok.. On 07-Jan-2021, Ultrasound scan: normal (normal) Normal. On 18-Feb-2021, Ultrasound scan: normal (normal) 20 week anatomy scan, all ok. On 09-Mar-2021, Glucose tolerance test: normal (normal) 1 hour test, all ok.. On 12-Apr-2021, Ultrasound scan: normal (normal) 32 week growth scan, fetus projected at 5 lb-6oz, all ok. On an unknown date, Blood test: normal (normal) All screenings ok.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   The date of positive pregnancy test on 29-Oct-2020. The patient has an established prenatal care. On an unknown date in Jan-2021 the ultrasound was normal and Glucose Tolerance test was done on 09-Mar-2021. Treatment medications were unknown.   Most recent FOLLOW-UP information incorporated above includes: On 12-Mar-2021: Internal review on 27-Jul-2021 resulted in updates to the pregnancy information. On 11-May-2021: Patient initials changed (from RD to RMD). Patient demographics changed. Added allergies (mold (food & environmental), cats/dogs, pollen, grasses). Added estimated due date, prior alcohol use. New lab data added (bloodwork). Added number of fetuses. Number of previous pregnancies changed (from 3 to 2) and details of previous pregnancies provided. The patient took 2nd dose of vaccine on 09-APR-2021. The concomitant medication changed (from Prenatal to NatureMade Prenatal Vitamin).