Zhang Y, Ma ZF. Psychological responses and lifestyle changes among pregnant women with respect to the early stages of COVID-19 pandemic. Int J Soc Psychiatry. 2021;67(4):344-50. doi: 10.1177/0020764020952116. [PubMed: 32815434].
Hamzehgardeshi Z, Omidvar S, Amoli AA, Firouzbakht M. Pregnancy-related anxiety and its associated factors during COVID-19 pandemic in Iranian pregnant women: a web-based cross-sectional study. BMC Pregnancy Childbirth. 2021;21(1):1-9. doi: 10.1186/s12884-021-03694-9.
Durmuş M, Öztürk Z, Şener N, Eren SY. The Relationship between the fear of COVID-19, depression, and spiritual well-being in pregnant women. J Relig Health. 2022;61(1):798-810. doi: 10.1007/s10943-021-01448-7. [PubMed: 34704161].
Nazir T, Amin R, Maqbool M. Emotional difficulties in pregnant females who tested positive for COVID-19: A cross-sectional study from South Kashmir, India. J Educ Health Promot. 2022;11(1):1-6. doi: 10.4103/jehp.jehp_465_21. [PubMed: 35281394].
Cele S, Jackson L, Khoury DS, Khan K, Moyo-Gwete T, Tegally H, et al. SARS-CoV-2 Omicron has extensive but incomplete escape of Pfizer BNT162b2 elicited neutralization and
requires ACE2 for infection. MedRxiv. 2021:1-15. doi: 10.1101/2021.12.08.21267417. [PubMed: 34909788].
Torjesen I. Covid-19: Omicron may be more transmissible than other variants and partly resistant to existing vaccines, scientists fear. BMJ. 2021;375:1-2. doi: 10.1136/bmj.n2943. [PubMed: 34845008].
Bartsch Y, Atyeo C, Kang J, Cai Y, Chen B, Gray KJ, et al. Preserved recognition of Omicron Spike following COVID-19 mRNA vaccination in pregnancy. Am J Obstet Gynecol 2022:9378(22):1-8. doi: 10.1016/j.ajog.2022.04.009. [PubMed: 35430229]