MMWR Series Receives 2022 Journal Impact Factor and Scimago Journal Rank; Updated Instructions for Authors

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July 7, 2023

Journal Impact Factor and Scimago Journal Rank

Journal Impact Factor and Scimago Journal Ranksted rates of U.S. firearm-related homicide by race, Hispanic origin, and sex from the National Vital Statistics System.

CDC’s MMWR Series received new 2022 Journal Impact Factors, which are based on the average number of 2022 citations in the scientific literature of reports published in 2020 and 2021.

  • Weekly: 33.9
  • Recommendations and Reports: 33.7
  • Surveillance Summaries: 24.9

The Journal Impact Factor ranked MMWR Weekly 3rd, Recommendations and Reports 4th, and Surveillance Summaries 7th out of 207 journals in the subject category of “Public, Environmental, & Occupational Health.”

Additionally, Scimago Journal Rank recently ranked MMWR Recommendations and Reports 7th, Weekly 20th, Surveillance Summaries 27th, and Supplements 40th out of 27,955 journals evaluated in 2022.

These metrics demonstrate the impact of MMWR and underscore its importance in sharing timely, accurate science to inform policy and guide practice.

Updated Instructions for Authors

As a part of MMWR’s ongoing modernization efforts and CDC Moving Forward’s commitment to rapid dissemination of science, MMWR updated its Weekly Instructions for Authors and Serial Instructions for Authors. The updates include requirements for more timely data, guidance on the use of artificial intelligence (AI) tools, and a new format for Weekly reports.

  • Timeliness of data.    
    • In Weekly reports, the most recent data from outbreaks and other public health investigations should not be older than 10 months at the time of submission, and surveillance and other data should not be older than two years (e.g., for publication in 2023, most recent data should be for 2021-2023).    
    • In Surveillance Summaries and Supplements, the most recent data should not be older than three years.
  • Use of Artificial Intelligence.
    • In accordance with International Committee of Medical Journal Editors (ICMJE) recommendations, if authors have used AI–assisted technologies (e.g., Large Language Models, chatbots, and image creators), they should state AI tools were used and ensure they haven’t introduced errors or biases.
  • Guidance on use of headings. Weekly reports will include headings to allow readers to quickly access sections of a report. This week’s issue was the first Weekly featuring headings.

Many thanks to our authors for contributions to the scientific literature, and to our readers for your interest.

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