March of Dimes March of Dimes Peristats

Maternal & Infant Health Research Registries

During the pandemic, tracking health outcomes is essential to improving care, developing policies and understanding the impact of this pandemic on maternal and infant health. Learn more about global research and registries that are tracking the data to ensure the health of mothers and babies.

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COVID-19 Resources & Literature

A resource compiling up-to-date published literature on COVID-19 relating to mothers and babies. We have gathered scientifically sound research to help guide further studies or keep you up to date with the maternal child health population and COVID-19.

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Puerto Rico

Find maternal and infant health data on a state level, or by county or city. Narrow your results or compare with another region.
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Quick Facts: Birthweight

Low birthweight is defined as less than 2500 grams or 5 1/2 pounds. It is also common to classify low birthweight births into moderately low birthweight (1500-2499 grams) and very low birthweight (less than 1500 grams or 3 1/3 pounds). These classifications are useful because they often correspond to clinical characteristics - increasing morbidities or illnesses with decreasing birthweight. Babies born too small are often born too soon. While the causes of low birthweight and preterm birth may be different in some cases, there is significant overlap within these populations of infants.

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