Sir, On 7 April 2020, Mehreen Zaigham and Ola Andersson published a systematic review of maternal and perinatal outcomes in 108 pregnancies with Covid-19 concluding that careful monitoring of such pregnancies is warranted.1 We would like to emphasize the need to assess objectively the impact of the novel Severe Acute Respiratory Coronavirus Type 2 (SARS-CoV-2) causing Covid-19 disease on pregnancy and perinatal outcomes by conducting epidemiological studies among pregnant women. Antibody responses to SARS-CoV-2 in patients with COVID-19. [Extracted from the article]