In December 2019, the novel coronavirus originated from Wuhan, China and quickly emerged as the greatest global public health threat [1,2,3,4]. Following this, scientists mobilized to investigate different aspects of the pandemic, including its potential consequences for societies using online data .
Social media as a quick available online data source in the midst of an outbreak was mentioned considering the speed of the outbreak [5, 6]. It has become an important medium for information dissemination during the pandemics and is playing a crucial role in health management . During crisis, social media provides trusted sources for public, enables connectivity, advances remote learning, and even accelerates research [4, 8]. Chew and Eysenbach stated social media could be used for real-time infodemiology studies, providing a source of information for health authorities to respond to public concerns .
While social media play important roles in crisis management , it also comprises a disturbing role trough the widely dissemination of misinformation, and fake news which can make crisis management more difficult .
Misinformation is defined as information that is false or inaccurate and not supported by scientific evidence . Current literature shows that during the outbreak of COVID-19 a large volume of inaccurate information is releasing through social media  that makes governments face the challenge of an “infodemic,” which causes people to experience difficulties in finding credible, evidence-based and trustworthy information [6, 11]. A recent study has reported that during the global pandemic, COVID-19 misinformation can greatly affect public awareness, knowledge and behaviors .
Besides, researchers also noted that the medical misinformation content pertaining to the COVID-19 pandemic is being proliferated at a frightening rate on social media . Shaw et al. stated that there will be a tsunami of information on social media . Brennen et al. said that misinformation pertaining to the global health crisis COVID-19 pandemic generates a severe risk to public health . Other studies reveal that misinformation in the context of COVID-19 include inaccurate information regarding the virus and its transmission, conspiracy theories, methods of prevention and treatment .
With the wide use of social media around the world including Iran, it is expected that the citizens are widely exposed to COVID-19 misinformation, through either active seeking of information or passive receiving of them. In fact, a defining characteristic of this pandemic has been the spread of misinformation such as WHO famously called the crisis not just a pandemic, but also an “infodemic”. Why and how misinformation spreads and has an impact on behaviors, beliefs and health outcomes is a complex and multidimensional phenomenon. Therefore, this study aimed to investigate the phenomenon from the discussions of Iranian health scientists using online data to provide insights for the health authorities to deal with the production, dissemination and use of misinformation.