hygiene can prevent infant mortality. Home-based technology to chlorinate, filter, and solar disinfection for organic water pollution could reduce cases of diarrhea in children by up to 48%. Improvements in food supplies and sanitation has been shown to work in the United States' most vulnerable populations, one being African Americans. Promoting behavioral changes, such as hand washing with soap, can significantly reduce the rate of infant mortality from respiratory and diarrheal diseases. According to UNICEF, hand washing with soap before eating and after using the toilet can save more lives of children by cutting deaths from diarrhea and acute respiratory infections. Focusing on preventing preterm and low birth weight deliveries throughout all populations can help to eliminate cases of infant mortality and decrease health care disparities within communities. In the United States, these two goals have decreased infant mortality rates on a regional population, it has yet to see further progress on a national level. Increasing human resources such as physicians, nurses, and other health professionals will increase the number of skilled attendants and the number of people able to give out immunized against diseases such as measles. Increasing the number of skilled professionals is negatively correlated with maternal, infant, and childhood mortality. With the addition of one physician per 10,000 people, there is a potential for 7.08 fewer infant deaths per 10,000. In certain parts of the U.S., specific modern programs aim to reduce levels of infant mortality. One such program that aims to reduce infant mortality is the "Best Babies Zone" (BBZ) based at the University of California, Berkeley. The BBZ uses the life course approach to address the structural causes of poor birth outcomes and toxic stress in three U.S. neighborhoods. By employing community-generated solutions, the Best Babies Zone's ultimate goal is to achieve health equity in communities that are disproportionately impacted by infant death. Prenatal care and maternal health When a person becomes pregnant, certain steps can help to reduce the chance of complications during the pregnancy. Attending regular prenatal care check-ups will help improve the baby's chances of being delivered in safer conditions and surviving. Additionally, taking supplementation, including folic acid, can help reduce the chances of birth defects, a leading cause of infant mortality. Many countries have instituted mandatory folic acid supplementation in their food supply, which has significantly reduced the occurrence of spina bifida, a birth defect, in newborns. Similarly, the fortification of