When you’re writing a paper about health, science, or public policy, you will almost certainly use information from the Centers for Disease Control and Prevention. The CDC is a powerhouse of credible data. But getting that data into your paper correctly means you need to know how to cite CDC website sources. It’s not just about avoiding plagiarism; it’s about showing your reader the exact trail of your research. This guide breaks down the process, making it simple to give credit where it’s due.
To cite the CDC website, you almost always treat the agency itself as the author. Your citation must include the author, the date the page was published or last reviewed, the title of the page or article, and the URL. For styles like MLA and Chicago, you often have to list the full government hierarchy: United States, Department of Health and Human Services, and then the Centers for Disease Control and Prevention. The specific format for punctuation and italics depends on whether you’re using APA, MLA, or Chicago style.
Who is the Author?
The first piece of any citation is the author. When you look at a CDC webpage, you probably won’t see a single person’s name attached. That’s because the author is the entire organization. This is called a “corporate author.” The Centers for Disease Control and Prevention is the expert group responsible for the information. Think of it like a movie; you might credit the director, but the studio (like Disney or Warner Bros.) is the corporate entity that produced it. The CDC is the studio behind the public health data.
For some citation styles, you also need to acknowledge the CDC’s place in the government’s family tree. The chain of command is a clunky but necessary detail. The Centers for Disease Control and Prevention is part of the U.S. Department of Health and Human Services. This full hierarchy is sometimes required to give the complete, official name of the source, adding a layer of bureaucratic filigree to your citation.
Quick Tip: Always use the full name, “Centers for Disease Control and Prevention,” in your main reference list or works cited entry. You can use the acronym “CDC” in the body of your paper after you’ve introduced the full name once.
APA, MLA, and Chicago Styles
Your teacher will tell you which citation style to use. While the core information is the same, the format—the specific order and punctuation—changes significantly between them. Here’s a quick look at how each style handles a typical CDC article.
| Style | Full Reference/Works Cited Entry Example | In-Text Citation Example |
|---|---|---|
| APA 7 | Centers for Disease Control and Prevention. (2023, April 11). About flu. https://www.cdc.gov/flu/about/index.htm | (Centers for Disease Control and Prevention, 2023) |
| MLA 9 | United States, Department of Health and Human Services, Centers for Disease Control and Prevention. “About Flu.” CDC, 11 Apr. 2023, www.cdc.gov/flu/about/index.htm. | (United States, Department of Health and Human Services, Centers for Disease Control) |
| Chicago 17 | U.S. Department of Health and Human Services. Centers for Disease Control and Prevention. “About Flu.” Last modified April 11, 2023. https://www.cdc.gov/flu/about/index.htm. | (In a footnote) |
APA Style
APA (American Psychological Association) is common in the sciences. Its format is clean. For the author, you just use the name of the specific agency. You follow it with the publication date in parentheses. The title of the web page is italicized in sentence case, meaning you only capitalize the first word and proper nouns. The entry ends with the URL.
Reference Page Entry:
Centers for Disease Control and Prevention. (2021, January 26). People with certain medical conditions. https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/people-with-medical-conditions.html
For your in-text citation, APA gives you two choices. A parenthetical citation puts the source in parentheses at the end of the sentence. A narrative citation weaves the author’s name into your writing.
Parenthetical citation: Individuals with chronic lung diseases face a higher risk of severe illness from COVID-19 (Centers for Disease Control and Prevention, 2021).
Narrative citation: The Centers for Disease Control and Prevention (2021) warns that individuals with chronic lung diseases face a higher risk of severe illness.
MLA Style
The Modern Language Association (MLA) style, often used in the humanities, is all about the details of publication. This is where that government hierarchy becomes important. You list the government, the parent department, and then the specific agency as the author. The article title goes in quotation marks. You also name the website’s title (usually just “CDC”) as the container, followed by the date in Month Day, Year format, and the URL.
Works Cited Entry:
United States, Department of Health and Human Services, Centers for Disease Control and Prevention. “Key Facts About Seasonal Flu Vaccine.” CDC, 25 Aug. 2022, www.cdc.gov/flu/prevent/keyfacts.htm.
The MLA in-text citation can feel long, as you must use the first few words of the Works Cited entry to point the reader to the right source. This is why some writers using multiple CDC sources choose to start the Works Cited entry with the title instead of the author, which allows for a shorter parenthetical citation. You can learn more about handling republished government reports, which is similar, on the MLA Style Center’s site.
Chicago Style
The Chicago style is flexible and common in historical and academic writing. It uses a system of footnotes or endnotes for an in-text citation, plus a bibliography at the end of the paper. Like MLA, it often requires listing the parent department first. The bibliography entry and the footnote contain the same information but punctuate it differently. The bibliography uses periods, while the footnote uses commas and parentheses.
Bibliography Entry:
U.S. Department of Health and Human Services. Centers for Disease Control and Prevention. “Protect Yourself from Wildfire Smoke.” Last modified August 26, 2021. https://www.cdc.gov/air/wildfire-smoke/default.htm.
Footnote:
1. U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, “Protect Yourself from Wildfire Smoke,” last modified August 26, 2021, https://www.cdc.gov/air/wildfire-smoke/default.htm.
What If the Page Disappears?
Imagine the faint, cold dread. You’re finalizing your paper, checking your sources one last time, and you click a link to a vital CDC report. But instead of the data you need, you get a “404 Page Not Found” error. It happens. Government web pages are sometimes removed or moved as administrations change or information is updated. So, what do you do?
Do not panic. Your work is not ruined. The key is to be honest about what happened. You should cite the document exactly as you found it, with the original URL and all the details you recorded. Then, you add one crucial piece of information: the date you last accessed it. This shows your teacher that you did your work correctly and that the source was available at the time of your research. As Chicago Manual of Style experts suggest, you can add a note like “access date” or a brief explanation in the footnote. This demonstrates academic integrity and acknowledges the unstable nature of online sources.
Mastering the In-Text Citation
An in-text citation acts like a signpost, pointing from a specific claim in your paper to the full citation in your reference list. Without it, your claims are just opinions. With it, they are evidence-backed statements. Whether you use a parenthetical citation at the end of a sentence or a narrative citation within it, the goal is clarity. But what about a page number? Most web pages don’t have a page number. For a direct quote, APA and other styles recommend using a paragraph number (e.g., para. 5) or the section heading to help your reader locate the quote.
Here’s an example of how a parenthetical in-text citation works inside a paragraph, giving authority to your analysis:
“Effective disease control relies heavily on public vaccination programs to establish herd immunity. [Topic sentence] The Centers for Disease Control and Prevention (2022) states that high vaccination coverage makes it more difficult for diseases to spread, protecting vulnerable populations. [Supporting evidence with narrative citation] This official guidance from a leading health agency confirms that individual vaccination is a community-minded act, directly impacting the well-being of those who cannot be vaccinated. [Evidence analysis] Therefore, understanding the science of disease prevention is essential for public cooperation. [Transition sentence]“
A Note on Tools: Using a free citation generator can be a great starting point. These tools are fantastic for building a basic citation. However, they can sometimes struggle with complex government sources. Always double-check the generator’s output against your style guide to ensure its accuracy. Think of it as a helpful assistant, not the final author of your citation. For more general help, guides on how to cite a website or a government website can provide broader context.
Do I use “Centers for Disease Control and Prevention” or just “CDC” in my citation?
In your full reference list or Works Cited entry, you must always write out the full name: “Centers for Disease Control and Prevention.” In the body of your paper, you can introduce the full name once, followed by the acronym in parentheses, like this: Centers for Disease Control and Prevention (CDC). After that, you can use “CDC” for subsequent mentions.
What if there’s an individual author listed on a CDC article?
This is rare, but it can happen, especially with publications like the Morbidity and Mortality Weekly Report (MMWR). Generally, you should still list the agency as the main author because the Centers for Disease Control and Prevention is the corporate author and publisher responsible for the content’s publication. However, check your specific style guide. For some specialized reports, like this Fact Sheet Reference example from APA, the format might shift slightly to accommodate both.
Where do I find the publication date?
Look at the top or bottom of the web page. The CDC is very good about transparency. You will usually find a date labeled “Last Reviewed,” “Last Updated,” or “Posted.” Use the most recent date you can find. If there are multiple dates, the “Last Reviewed” date is often the best choice, as it indicates the information is still considered current and accurate by the agency for disease control.
Why is the citation format so complicated?
Is a detailed citation just a fussy requirement from your teacher? Not at all. A proper citation is the address of your evidence. It allows any reader of your paper to find the exact page, report, or dataset you used to build your argument. It’s the foundation of academic honesty and makes your own writing more powerful by connecting it to the work of experts in disease control and prevention and public health. It’s your way of showing you’ve done the work and are standing on a firm foundation of facts.
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Terry is a Chicago-based writer and editor who creates practical, student-friendly guides on essay writing, research, and citation styles (APA, MLA, and Chicago). He’s spent 15+ years editing educational content and building clear examples that help readers apply rules without guessing. When he’s not revising drafts, he’s usually turning messy notes into clean outlines and hunting down the one detail everyone skips.