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BACKGROUND The emergence of COVID-19 and the associated pandemic outbreak demonstrated the need to educate and mobilize the public to adopt behaviors for community mitigation. In a context of rapid epidemiological worsening, the use of digital media to access information benefits the population and can contribute to the control of the impact of the COVID-19 pandemic. OBJECTIVE This study aimed to evaluate the most viewed Brazilian videos on YouTube as a source of information about COVID-19. METHODS The quantitative, observational, and cross-sectional study was conducted on YouTube on 04/30/2020, with videos uploaded between 01/01/2020 and 04/ 30/2020. The descriptor “coronavirus” was used and the first 100 most viewed videos that were recorded in Brazilian Portuguese, related to the topic, unduplicated, and being less than 30 minutes long were selected. Two judges recorded the Uniform Resource Locator (URL) of the videos downloaded from YouTube for data analysis. RESULTS The 100 videos analyzed showed the following results: 140,027,282 views; 7,201,187 "likes"; 165,624 "dislikes"; 352,541 comments; and a total duration of 12 hours, 28 minutes, and 12 seconds. In terms of content, death was mentioned in 71 videos, and the top prevention behaviors listed by the U.S. Centers for Disease Control and Prevention were addressed by less than one-third of the videos. Most YouTube videos could do a greater job of disseminating information about COVID-19 prevention behaviors, promoting population adherence. CONCLUSIONS Educating, mobilizing, and engaging the public in adopting and practicing behaviors for community mitigation are differential aspects of successfully addressing the COVID-19 pandemic. Given the need for social distancing, YouTube could play an important role in interaction and communication about COVID-19 and be a significant complementary information strategy to combat the pandemic.

UNSTRUCTURED As the number of confirmed cases of and deaths from COVID-19 grows fast, the health team and the general public are facing psychological suffering, including anxiety, depression, stress, anguish, boredom, loneliness, anger and suicide. These problems worsen when added to the consequences of the misinformation overload, which has spread uncertainty, fear, anxiety and racism on the internet on a scale never seen in previous epidemics, such as severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS) and Zika. In this sense, the purpose of this Viewpoint article is to reflect this context, including the need for strategies to be developed by governments, health institutions, technology and communication companies to combat the ongoing pandemic.

BACKGROUND Studies have been assessed the importance of YouTube as a source of information for some health conditions, diseases or procedures. However, this platform provides an ever-growing, unregulated source, and some of their information may cause health risks to patients. OBJECTIVE The aim of this study was to evaluate the use of Brazilian YouTube videos as a source of useful in-formation about diabetes foot care. METHODS The website www.youtube.com was searched on November 30, 2016, for the term “diabetes foot care” in Brazilian Portuguese to assess their usefulness as an information source. The videos were categorized as very useful, moderately useful, somewhat useful, and not useful. The video sources were categorized into 4 groups: organizational, professional, personal and advertisement. Ethics ap-proval was not required and descriptive statistics were calculated for all variables. RESULTS Our search resulted in 8.080 videos, of which 200 were reviewed, and 159 videos uploaded on YouTube between 2008 and 2016 were analysed. Videos were categorized as very useful (6.29%), moderately useful (16.35%), somewhat useful (24.35%), and not useful (52.83%). The video source revealed the following classification: organizational, n = 76; professional, n = 11; personal, n= 46; and advertisement, n = 26. CONCLUSIONS YouTube's Brazilian videos on diabetic foot care are popular, with varied sources and content. However, most of their content is not useful. Therefore, YouTube videos in Portuguese cannot be considered a good source of information about diabetes foot care.

BACKGROUND YouTube consist of a video publishing tool available in cyberspace with unrestricted, decentralized and interactive access. The YouTube plataform offers thousands of videos to acquire knowledge and virtual interaction between people. It is known that sharing videos is a resource that can influence patient behavior. Studies show the importance of YouTube as a source of useful information about some diseases, including Diabetes Mellitus (DM). However, no study has evaluated the use of YouTube as a source of information on diabulimia, a term used to describe the intentional omission of insulin in individuals with DM type 1 as a strategy for weight loss. OBJECTIVE In this study, our aim was to research the source and audience of videos on YouTube Brazil regarding diabulimia. METHODS The YouTube site was searched on March 18, 2017, for two associated keyword terms "Diabulimia and Diabetes". Videos not recorded in Brazilian Portuguese language and those not related to the focus were excluded. Were included the videos associated with the terms and available on YouTube. Video links were recorded and analyzed independently by E.S. and G.K.C.C. Were recorded the following criteria for all videos: upload date, number of views, duration, likes, dislikes, and comments. The source of the videos was categorized into three groups: patients, health professionals and others sources. RESULTS The search resulted in a total of 427 videos, of which 417 (97.66%) were excluded (332 in English, 83 in Spanish, 1 in Danish, and 1 in Portuguese from Portugal). Then, 10 (2.34%) videos were pre-selected and analyzed. This videos were uploaded to YouTube between 2007 and 2016, and showed the following metrics: 10.303 views; 707 likes; 11 dislikes, and 115 comments. The total run time of the videos was 5 minutes and 22 seconds. The source of the videos revealed the following classification: professionals (30%, doctors), patients (20%) and others sources (50%, including advertisement, TV programm, etc.). Only two Brazilian videos related diabulimia with DM. CONCLUSIONS This research showed that YouTube in Brazil is little used, both in the availability of videos and in the search for information that associates diabulimia with DM. This finding admits the YouTube's potential as a tool for use in health education about this theme. There were contributions from health professionals in the process of transmitting videos on YouTube Brazil, but the videos of advertisements and the videos of reports were predominat. This result is worrying because it configures serious risks of transmission with inaccurate or misleading information about DM and diabulimia on the Internet. Thus, we emphasize the need to produce videos about diabulimia for use in diabetes online health education in Brazil.