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The COVID-19 pandemic has had enormous worldwide medical and economic impacts. Although it is hoped that the introduction of vaccines late in 2020 and early in 2021 will eliminate the pandemic, much can be learned from early, current, and future cases of this infectious disease.

The relevance of these events for the study of circadian rhythms is multifaceted. The lockdown imposed with the goal of reducing the spread of the virus had and continues to have an effect on how people organize their daily activities. Misalignment of central circadian rhythms related to shift work in healthcare providers likely increases their risk of coronavirus infection and leads to worse clinical outcomes. For the general population, circadian disruption caused by the lockdown and social distancing can dampen the immune system, making the virus harder to defeat. These and other connections between COVID-19 and circadian rhythms are the theme of a new special issue of the Journal of Circadian Rhythms.

We invite submissions of research articles addressing these issues. To make a contribution, please register at https://www.jcircadianrhythms.com/ and follow the instructions for article submission. Please, indicate in the cover letter (step 1) that you are submitting in response to this call. Ubiquity Press journals are eligible for fast-track peer review through a joint initiative to maximize the efficiency of peer review of COVID-19 related publications. For more information, see here.

The Journal of Circadian Rhythms is accepting submissions for publication for 2020.

The Journal of Circadian Rhythms is an open access, peer-reviewed online journal that publishes research articles dealing with circadian and nycthemeral (daily) rhythms in living organisms, including processes associated with photoperiodism and daily torpor. The journal includes both basic and applied research at any level of biological organization (molecular, cellular, organic, organismal, and populational). Studies of daily rhythms in environmental factors that directly affect circadian rhythms are also pertinent.

The Journal of Circadian Rhythms is indexed in PubMed, the Web of Science/Clarivate Analytics and Scopus. JCR's 2019 Scopus CiteScore is 3.7. The journal is at the 35% (16/24) of Endocrine and Autonomic Systems journals and 41% (101/172) of Physiology ones.

The Journal of Circadian Rhythms publishes as soon as articles are ready. There is no delay in research being released. Submissions can be sent throughout the year. The journal’s average submission to acceptance time in 2019 was 62 days.

We accept online submissions via our journal website. See our Author Guidelines for further information. Alternatively, please contact the editor for more information.

Here are two of our editor’s picks from last year’s volume:

Barbato, E., Mianzo, H., Litman, P. and Darrah, R., 2019. Dysregulation of Circadian Rhythm Gene Expression in Cystic Fibrosis Mice. Journal of Circadian Rhythms, 17(1), p.2. DOI: http://doi.org/10.5334/jcr.175

Avello, P.A., Davis, S.J., Ronald, J. and Pitchford, J.W., 2019. Heat the Clock: Entrainment and Compensation in Arabidopsis Circadian Rhythms. Journal of Circadian Rhythms, 17(1), p.5. DOI: http://doi.org/10.5334/jcr.179

Thank you to reviewers

We would like to take this opportunity to thank all of the peer reviewers who gave their time and expertise during 2019 to help ensure that the Journal of Circadian Rhythms continues to publish rigorously tested research. As always, we are extremely appreciative of the efforts put in to ensure that high academic quality is maintained.

Editor in Chief:

Roberto Refinetti, Boise State University, United States