1. Zambrano LD† Ellington South† Strid Pet al. Update: Characteristics of Symptomatic Women of Childbearing Age with Laboratory-Confirmed SARS-CoV-2 Infection by Pregnancy Status – United States, January 22 – October 3, 2020. MMWR Morb Mortal Wkly Rep 2020;69:1641†1647†
2. DeSisto CL† Wallace B† Simeone RMet al. Stillbirth risk in women with and without COVID-19 in childbirth hospitalization — United States, March 2020–September 2021. MMWR Morb Mortal Wkly Rep 2021;70:1640†1645†
3. ass AA† Chemaitelly H† Al Khal A, et al. Effectiveness of SARS-CoV-2 Vaccine in Preventing Confirmed Infection in Pregnant Women. J Clin Invest 2021;131(23):e153662†e153662†
4. Dagan Nee† Barda Nee† Biron-Shental T, et al. Effectiveness of the BNT162b2 mRNA COVID-19 vaccine in pregnancy. Nat Med 2021;27:1693†1695
5. Lip child HS† Vazquez-Benitez G† DeSilva Met al. Reception of COVID-19 Vaccine During Pregnancy and Premature Birth or Small for Gestational Age at Birth – Eight Integrated Health Care Organizations, United States, Dec 15, 2020 – Jul 22, 2021. MMWR Morb Mortal Wkly Rep 2022;71:26†30†
6. Shimabukuro TT† Kim SY† Myers TR, et al. Preliminary Findings of the Safety of mRNA Covid-19 Vaccines in Pregnant Subjects. N Engl J Med 2021;384:2273†2282†
7. Zauche LH† Wallace B† Smoots AN, et al. Reception of mRNA Covid-19 vaccines and risk of spontaneous abortion. N Engl J Med 2021;385:1533†1535†
8. Magnus MC† Gjessing HK† Eide HN† Wilcox AJ† Fell DB† Hauberg SE† Covid-19 Vaccination during pregnancy and miscarriage in the first trimester. N Engl J Med 2021;385:2008†2010†
9. Center for Disease Control and Prevention. COVID-19 vaccines during pregnancy or breastfeeding (https://www.cdc.gov/coronavirus/2019-ncov/vaccines/recommendations/pregnancy.html).
10. Abu Raya B† Edwards KM† Scheifele DW† Halperin SA† Whooping cough and flu immunization during pregnancy: a landscape review. Lancet Infect Dis 2017;17(7):e209†e222†
11. Aziz-Baumgartner E† Grohskopf L† Patel M† Realizing the potential of maternal flu vaccination. JAMA 2021;325:2257†2259†
12. Omer SB† Maternal immunization. N Engl J Med 2017;376:1256†1267†
13. Halasa NB† Olson SM† State MAet al. Effectiveness of Maternal Vaccination with mRNA COVID-19 Vaccine in Pregnancy Against COVID-19-Associated Hospitalization in Infants < 6 Months - 17 States, July 2021 - January 2022. MMWR Morb Mortal Wkly Rep 2022;71:264†270†
14. Carlsen EØ† Magnus MC† Oakley L, et al. Association of COVID-19 Vaccination in Pregnancy with Incidence of SARS-CoV-2 Infection in Infants. JAMA Intern Med 2022 June- 1 (E-publication before printing).
15. Mithal LBA† Otero S† Shanes ED† Goldstein YES† Miller ES† Cord blood antibodies after maternal coronavirus disease 2019 vaccination during pregnancy. Ben J Obstet Gynecol 2021;225:192†194†
16. Beharier O† Plitman Mayo R† Raz T, et al. Efficient transfer of maternal to neonatal antibodies against SARS-CoV-2 and BNT162b2 mRNA COVID-19 vaccine. J Clin Invest 2021;131:150319†150319†
17. Prabhu M† Murphy EA† Sukhu AC, et al. Antibody response to coronavirus disease 2019 (COVID-19) messenger RNA vaccination in pregnant women and transplacental passage in umbilical cord blood. Obstet Gynacol 2021;138:278†280†
18. Perl SH† Uzan-Yulzari A† Klainer H, et al. SARS-CoV-2 specific antibodies in breast milk after COVID-19 vaccination of breastfeeding women. JAMA 2021;325:2013†2014†
19. Baird JK† Jensen SM† Urba WJ† Fox BA† Baird Jr† SARS-CoV-2 antibodies detected in breast milk after vaccination. J Hum Lact 2021;37:492†498†
20. Yang YJ† Murphy EA† Singh S, et al. Association of gestational age in vaccination against coronavirus disease 2019 (COVID-19), history of infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and a booster dose of vaccine with maternal and umbilical cord antibody levels at delivery. Obstet Gynacol 2022;139:373†380†
21. Trostle ME† Aguero-Rosenfeld ME† Roman AS† Lighter JL† High antibody levels in cord blood from pregnant women vaccinated against COVID-19. Am J Obstet Gynecol MFM 2021;3:100481†100481†
22. Nir O† Schwartz A† Toussia-Cohen South, et al. Maternal-neonatal transmission of SARS-CoV-2 immunoglobulin G antibodies in maternity women treated with BNT162b2 messenger RNA vaccine during pregnancy. Am J Obstet Gynecol MFM 2022;4:100492†100492†
23. shook LL† Atyeo CG† Yonker LM, et al. Durability of anti-spike antibodies in infants after maternal COVID-19 vaccination or natural infection. JAMA 2022;327:1087†1089†
24. brands KJ† Whitaker M† Agathis NTet al. Hospitalization of Infants and Children 0-4 Years of Age with Lab-Confirmed COVID-19 – COVID-NET, 14 States, March 2020 – February 2022. MMWR Morb Mortal Wkly Rep 2022;71:429†436†
25. Hobbs CV† Woodworth K† Young CC, et al. Frequency, Characteristics, and Complications of COVID-19 in Hospitalized Infants. Pediatr Infect Dis J 2022;41(3):e81†e86†
26. Mølgaard-Nielsen D† Fischer TK† Krause TG† Hviid A† Effectiveness of maternal immunization with trivalent inactivated influenza vaccine in pregnant women and their infants. J Intern Med 2019;286:469†480†
27. Olson SM† Newham’s MM† Halasa NB, et al. Vaccine effectiveness against life-threatening influenza illness in US children. Clin Infect Dis 2022 January 13 (E-publication before printing).
28. Chua Ho† feng s† Lewnard YES, et al. Using test-negative controls to monitor vaccine effectiveness: a systematic review of the methodology. Epidemiology 2020;31:43†64†
29. Olson SM† Newham’s MM† Halasa NB, et al. Effectiveness of BNT162b2 Vaccine Against Critical Covid-19 in Adolescents. N Engl J Med 2022;386:713†723†
30. Olson SM† Newham’s MM† Halasa NBet al. Effectiveness of Pfizer-BioNTech mRNA Vaccination Against COVID-19 Hospitalization in Individuals 12-18 Years of Age — United States, June-September 2021. MMWR Morb Mortal Wkly Rep 2021;70:1483†1488†
31. Office of the Federal Registry. Code of Federal Regulations: A Time eCFR System. Title 45 (https://www.ecfr.gov/cgi-bin/text-idx?SID=fc043bd2812f0775fa80066558a6bbcf&mc=true&node=pt45.1.46&rgn=div5#se45.1.46_1102).
32. Razzaghi H† Meghani M† Pingali Cet al. COVID-19 Vaccination Coverage in Pregnant Women During Pregnancy — Eight Integrated Care Organizations, United States, December 14, 2020 – May 8, 2021. MMWR Morb Mortal Wkly Rep 2021;70:895†899†
33. Patel MK† Bergeri I† Bresee JSO, et al. Evaluation of the effectiveness of the COVID-19 vaccine after release: summary of interim guidelines from the World Health Organization. Vaccine 2021;39:4013†4024†
34. Center for Disease Control and Prevention. COVID Data Tracker: Variant Proportions (https://covid.cdc.gov/covid-data-tracker/#variant-proportions).
35. Gray KJ† Bordt EA† Atyeo C, et al. Coronavirus disease 2019 vaccine response in pregnant and lactating women: a cohort study. Ben J Obstet Gynecol 2021;225(3):303.e1†303.e17†
36. Small POI† Stockwell MS† Demarco Met al. Effectiveness of COVID-19 Pfizer-BioNTech BNT162b2 mRNA Vaccination in Preventing COVID-19-associated emergency and emergency care and hospitalizations in non-immunocompromised children and adolescents aged 5-17 years — VISION Network , 10 states, April 2021–January 2022. MMWR Morb Mortal Wkly Rep 2022;71:352†358†
37. Lauren AS† Tenforde MW† Chappell JD, et al. Clinical severity and effectiveness of mRNA vaccines against Covid-19 of omicron, delta, and alpha SARS-CoV-2 variants in the United States: prospective observational study. BMJ 2022;376:e069761†e069761†
38. Center for Disease Control and Prevention. Archived Cumulative Data: Percentage of pregnant people, ages 18-49 who generally received at least one dose of a COVID-19 vaccine during pregnancy, by race/ethnicity and date reported to CDC Vaccine Safety Datalink* , United States | December 20, 2020–January 20, 2022 (https://data.cdc.gov/Vaccinations/Cumulative-Data-Percent-of-Pregnant-People-aged-18/4ht3-nbmd/data).
39. Nemet I† Clicker L† lusty Y, et al. Third BNT162b2 vaccination neutralization of SARS-CoV-2 omicron infection. N Engl J Med 2022;386:492†494†
40. Thompson MG† Natarajan K† Irving SAet al. Effectiveness of third-dose mRNA vaccines against COVID-19-associated emergency and emergency care and hospitalizations in adults during periods of predominance of delta and ommicron variants – VISION Network, 10 States, August 2021 – January 2022. MMWR Morb Mortal Wkly Rep 2022;71:139†145†