Calcium Aspirin Multiple Micronutrients (CAMMS) to Reduce Preterm Birth

This trial will evaluate the impact of an integrated intervention of daily maternal calcium, aspirin, and multiple micronutrients (CAMMS) compared to iron-folic acid (IFA) during pregnancy on preterm birth and other adverse birth outcomes. Both interventions will be delivered through existing antenatal service platforms using context-specific strategies informed by formative research incorporating human-centered design processes to achieve high acceptability and high adherence, in three low-income countries with diverse contexts: Burkina Faso, Pakistan, and Zimbabwe.