MPH 503 Module 1 Sources of Public Health Law Example

Reviewed by Douglas Renshaw, MBA Aspen University Updated September 2026

This MPH 503 Module 1 sample paper traces where public health legal authority comes from, using a composite county's response to a hepatitis A outbreak that caused 140 cases and four deaths. Health Policy and Ethical Issues in Public Health, a core course in Aspen University's Master of Public Health program, covers law, regulation and ethics in practice. The paper moves from the states' police power and the 1905 smallpox vaccination decision through a state enabling statute, reporting and exclusion rules, a local sanitation ordinance, health officer orders and federal funding. A table matches each source to the actions it supported. Voluntary outreach came first, and within two months more than 9,000 people at high risk were vaccinated and cases fell to near zero. The analysis closes with why officials must know the basis for every action.

CourseMPH 503 Health Policy and Ethical Issues in Public Health
ModuleModule 1
Paper typePublic health law paper
LengthAbout 1,079 words, 6 pages
FormatAPA 7 student paper
SchoolAspen University
ProgramMaster of Public Health
UpdatedSeptember 2026

Free sample paper for MPH 503 Module 1

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Where Public Health Gets Its Power: Legal Authority in a County's Hepatitis A Response

Student Name

Master of Public Health Program, Aspen University

MPH 503: Health Policy and Ethical Issues in Public Health

Instructor Name

Month Day, Year

What this page is doingThe title asks the question every public health action must answer before it begins. APA 7 student title page.
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Where Public Health Gets Its Power: Legal Authority in a County's Hepatitis A Response

Every public health action, from inspecting a restaurant to closing a contaminated beach, depends on legal authority. Without it, officials cannot compel anyone to do anything, and actions may be overturned in court. Public health professionals therefore need to know where their power comes from and where it stops. This paper traces the sources of public health law through a composite county's response to a hepatitis A outbreak among people experiencing homelessness, showing which source of authority supported each action the county took.

The Outbreak

Over three months, a county of 600,000 people recorded 140 cases of hepatitis A, most among people experiencing homelessness or using drugs, with four deaths. Hepatitis A spreads through contaminated food, water and surfaces and is prevented by vaccination and sanitation. The county health officer needed to vaccinate thousands of people quickly, improve sanitation at encampments, require food handlers to report symptoms and share information with shelters and hospitals. Each step required a legal basis, and the county's attorney was asked to confirm one before each order was signed.

The Constitution and Police Power

Public health authority begins with the states' police power, the authority the states kept under the Constitution to guard residents' health, safety and general welfare. States do not need a specific constitutional grant to regulate for health; the power is inherent in state sovereignty. The Supreme Court recognized in an early vaccination case that a state's health rules can stand, even when they curb personal freedom, so long as they are reasonable (Jacobson v. Massachusetts, 1905). That decision remains the foundation for modern public health powers.

What this page is doingBeginning with police power explains why most public health authority sits with states rather than with the federal government.
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Sources at a Glance

The table lists the sources of authority the county relied on.

SourceCreated byUsed in the outbreak for
State constitution and police powerThe people and courtsUnderlying authority for all actions
State public health statutesLegislatureHealth officer's power to control communicable disease
State administrative rulesState health departmentReportable disease list, food handler exclusion rules
County ordinancesCounty boardSanitation standards, portable toilet and handwashing requirements
Health officer ordersCounty health officer under statuteOrders to encampment property owners
Case lawCourtsLimits on how orders can be applied

State Enabling Statutes

States pass statutes that create health departments and grant powers to health officers. The composite state's statute authorized local health officers to take measures necessary to prevent and control communicable disease, including issuing orders, inspecting premises and requiring reporting. This delegated authority let the county health officer act without asking the legislature for each step, which matters in a fast-moving outbreak.

Administrative Rules

State health departments write detailed rules under their statutes. The state's rules listed hepatitis A as a reportable disease, required laboratories and clinicians to report cases within one working day and required food service workers with hepatitis A to be excluded from work. Rules carry the force of law when adopted through required procedures, typically including public notice and comment; at the federal level, those steps are set by 5 U.S.C. § 553 (Administrative Procedure Act, 1946), and most states have similar laws.

Local Ordinances

Counties and cities pass ordinances within the authority states give them. The county's sanitation ordinance allowed it to require property owners to provide handwashing stations and toilets where people were living outdoors, and to clean contaminated areas. Local ordinances let communities address conditions specific to them, though they cannot conflict with state law.

Health Officer Orders

Using statutory authority, the health officer issued orders requiring a shelter operator to add handwashing stations and a private landowner to allow sanitation crews on property where people camped. Orders are the most immediate tool of public health law, but they must be tied to statutory authority, be reasonable and be applied fairly, or they may be challenged.

Federal Authority

The federal government has no general police power, so it acts through powers the Constitution grants, especially spending and regulating interstate commerce. In the outbreak, federal funds paid for vaccine through immunization grants, and CDC provided technical assistance at the state's request. Federal authority is broad in areas such as food and drug regulation but limited in direct control of local public health actions.

Case Law as a Limit

Courts shape public health law by deciding challenges. Beyond upholding reasonable regulations, courts have required that public health measures have a real connection to protecting health, not be arbitrary and not target groups unfairly. Public health law scholars describe these as requirements of necessity, reasonable means, proportionality and fairness (Gostin & Wiley, 2016). The county designed its orders with these principles in mind.

Voluntary Measures First

Authority to compel does not mean compulsion is always best. The county offered vaccination at encampments, shelters and syringe service programs, partnered with outreach workers trusted by residents and provided hygiene kits. Voluntary measures reached most people; orders were used only for property owners who declined to cooperate. Using the least restrictive effective measure is both a legal principle and an ethical one.

Outcome

Within two months, the county vaccinated more than 9,000 people at high risk, installed 60 handwashing stations and saw cases fall to near zero. No order was challenged in court, partly because each rested on clear authority and was applied consistently and proportionately.

Why Sources Matter

Knowing the source of authority tells officials what they may do, what procedures they must follow and how actions may be challenged. A health officer who acts beyond statutory authority, or who uses an order where a rule is required, risks having actions overturned and trust eroded. Public health attorneys are essential partners in any significant response. Staff training on the legal basis of routine tools, such as exclusion letters and inspection warrants, pays off when an emergency compresses the time available to check.

Documenting the Basis

Each order the health officer signed recited the statute relied on, the facts showing a disease threat and the reason the chosen measure was needed. That habit cost little time and gave county counsel a ready record if anyone objected.

Conclusion

The county's hepatitis A response rested on several layers of law: state police power recognized by the courts, a state statute empowering health officers, administrative rules on reporting and exclusion, a local sanitation ordinance, health officer orders and federal funding and expertise. Courts set limits of necessity and fairness. Knowing each source, and using voluntary measures first, allowed an effective response that withstood scrutiny.

References

Administrative Procedure Act, 5 U.S.C. § 553 (1946).

Gostin, L. O., & Wiley, L. F. (2016). Public health law: Power, duty, restraint (3rd ed.). University of California Press.

Jacobson v. Massachusetts, 197 U.S. 11 (1905).

Reading the MPH 503 Module 1 assignment instructions

Aspen's catalog describes MPH 503 as a study of health policy, law and ethics, including regulatory action and the legislative and judicial processes, and the actual module wording sits inside the classroom, so this sample took the opening topic of legal authority as its subject. An assignment on sources of public health law generally asks you to identify the layers of authority, from constitutions down to local orders, and then use them to explain what officials did in a specific situation. Confirm whether your prompt names a specific outbreak or lets you choose. Pick a case with several kinds of action, so that each source has something to explain. Distinguish between what a statute grants and what a rule details. Keep federal and state powers separate, since the federal government lacks a general police power.

How this MPH 503 Module 1 example is built

Just over 1,000 words make up this sample, with a four-column table of sources placed after the constitutional section. It describes the outbreak, explains police power and the landmark vaccination ruling, and then works through statutes, administrative rules, ordinances, health officer orders and federal authority in turn. Later sections show case law as a limit, voluntary measures offered before compulsion, the outcome, why sources matter and how written orders documented their basis. The margin comment beside the opening explains why a legal paper benefits from starting with a concrete public health problem instead of abstract doctrine. The conclusion links each layer of law to the county's success and to the absence of any court challenge.

Where the marks sit in the MPH 503 Module 1 rubric

Graders of a legal authority paper look for accurate identification of each source of law, correct application to the facts, an understanding of limits on power and clear writing that a nonlawyer can follow. This sample cites the Supreme Court's 1905 decision and a leading public health law text, both in APA style. Each source is tied to a concrete action in the outbreak, which demonstrates application rather than definition alone. Limits appear in the case law section and the emphasis on proportionate, consistent orders. Plain headings and a summary table help the reader follow the argument. Strong papers also show judgment about when not to use compulsory powers, which this sample does through its section on voluntary outreach.

MPH 503 Module 1 help: mistakes that cost marks

Students often list sources of law without showing how each one applies to the scenario, or they mix up statutes and regulations. Another frequent gap is overstating federal power in matters states control. Cite actual cases and statutes, not only textbook summaries, and use correct legal citation format inside APA references. Avoid giving legal conclusions without explaining the reasoning. If your case lacks some layers, such as local ordinances, say so rather than inventing them. Our tutors are glad to read your outline and confirm that each source is matched to the right action and that federal and state roles are described correctly. Finish by explaining what the case teaches about acting lawfully under pressure.

Write yours, or have the desk draft it

This paper is an original model document written by our desk, not a submitted student paper and not an official Aspen University document. Read it for the moves, then write your own to the instructions in your classroom. If you want one built to your exact prompt and rubric, the first custom sample is free and arrives in 24 to 48 hours.

More MPH 503 and Master of Public Health sample papers

MPH 503 Module 1 questions, answered

What does MPH 503 Module 1 usually ask for?

Aspen's MPH 503 covers public health law and the legislative, regulatory and judicial processes, so a paper on sources of legal authority is a typical first assignment. Check your classroom prompt.

What is the difference between a statute and an administrative rule?

A statute is passed by a legislature; a rule is adopted by an agency under authority a statute grants, usually after public notice and comment.

Does the federal government have police power?

No. It acts through enumerated powers such as spending and regulating interstate commerce, while states hold police power.

Where can I find a free MPH 503 Module 1 sample paper?

The hepatitis A legal authority paper appears above with its sources table. It is the first of eight MPH 503 samples on this site.

What are the main sources of public health law in MPH 503 Module 1?

Constitutions and the states' police power, statutes, administrative rules, local ordinances, health officer orders and court decisions, with federal authority based on spending and commerce powers.