<qa>  What is the name of the group that is responsible for the surveillance of pregnant women?Pregnant women requiring hospital admission for influenza in hospitals participating in surveillance for the Toronto Invasive Bacterial Diseases Network TIBDN and Serious Outcomes Surveillance SOS for the PHACCIHR Influenza Research Network PCIRN, as well as pregnant women with influenza admitted to intensive care units as part of the Canadian Critical Care Clinical Trials Group Influenza Surveillance System ICU-Flu will be approached. Risk factor data from the baseline and weekly questionnaires will be collected retrospectively from these women. With consent, women will be followed to deliverytermination, and the same information collected regarding neonatal outcomes as was collected for other women in the cohort. 