In a report by Clarivate Analytics for the Brazilian Coordination for the Improvement of Higher-Level-Education Personnel (CAPES) about the Brazilian research productivity between 2013 and 2018, Brazil ranked 13th (250 680 publications) among countries with the highest research productivity, corresponding to 11% and 16% of the first ranked countries, United States and China, respectively.^, In that period, the publications in Brazil increased by 30%, twice the global mean, with over 50 000 articles published in 2018 only.

A good example of that increase has been described in the study analyzing the number of papers published in Nature and Science from the University of São Paulo, University of Campinas, and the Federal University of Rio de Janeiro, from 1980 onwards. The publication counts were categorized by decade from 1980 to 2010 and for 2017. The authors have reported that those institutions together published 0.08 papers, on average, in each edition of those two journals. The total number of papers from those universities increased by 2200% from 1980 to 2017, with a higher representativity in the past decade (from 7 papers in 2010 to 23 in 2017). It is worth noting the increase in partnership with international institutions for the publication of scientific papers.

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In July 2020, Brazil has the world’s second highest Covid-19 death toll. The COVID-19 pandemic is spreading fast in America. Since the first case of COVID-19 was confirmed, it took 114 days in Brazil (February 26-June 19) and 98 days in the USA (January 21-April 29) for the number of cases to reach more than 1,000,000. Parallel to the rapid growth of COVID-19 cases, there has been a progression in the number of scientific publications. Until June 2020, more than 25,800 papers about COVID-19 were published in PubMed (17,800 open access – 69%). This volume of scientific publications is unprecedent. The Journal of the American Medical Association (JAMA), for example, received more than 11,000 submissions from January 1 to June 1, 2020, compared with approximately 4,000 submissions during the same period in 2019. The International Journal of Cardiovascular Sciences is facing a similar situation with more than doubled manuscripts submitted. Our aim is to discuss the importance of Open Science during the COVID-19 pandemic and the role of cardiology journals in this special moment.

COVID-19 is a new disease and many of its aspects are still obscure. What is known about SARS-CoV-2 transmission, incubation, and environmental stability? What are the risk factors for the disease? What is the best evidence-based therapy? What is the real importance of asymptomatic and presymptomatic virus shedding in SARS- CoV-2 transmission? How long neutralizing antibodies persist following infection, and do they confer immunity to reinfection? These and many other key questions are still unanswered. There is a great need for fast and efficient publication of information, but at the same time all efforts must be made to assure quality, and avoid biases and limitations.

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