This question relates to the establishment time of the US Department of Public Health. According to historical records, the American Department of Public Health was founded in 1979, so the American public health service began at that time. The relevant explanations are as follows:

First, introduce the origin of American public health service:

The U.S. Department of Health and Human Services was established in accordance with the Organic Law of the Ministry of Education (PL 96-88) signed by President Jimmy Carter on June1979+1October 17, 2007. The bill divides the former US Department of Health Education and Welfare (HEW) into G.I. Bill, Department of Veterans Affairs, Department of Health and Human Services, and a separate department of education. Both departments started operation on May 4th. 1980.

Second, the detailed description of the department:

United States Department of Health and Human Services; HHS) is called the US Department of Health. It is an administrative department of the federal government, which maintains the health of American citizens and provides public services. The U.S. Department of Health and Human Services was established in accordance with the Organic Law of the Ministry of Education (PL 96-88) signed by President Jimmy Carter on June1979+1October 17, 2007. The bill divides the former US Department of Health Education and Welfare (HEW) into G.I. Bill, Department of Veterans Affairs, Department of Health and Human Services, and a separate department of education. Both departments started operation on May 4th. 1980. The U.S. Department of Health and Human Services is headed by the Secretary of Health and Human Services.