<p>Misinformation about outbreaks, epidemics, and pandemics is a decades-old problem that has been exacerbated by the rise of the internet and the widespread use of social media. Some false claims may be addressed through sound scientific analysis, suggesting that scientists can help counter misinformation by providing evidence-based, scientifically defensible information that may discredit or refute these claims. This report explains how scientists can work collaboratively across scientific disciplines and sectors to identify and address inaccuracies that could fuel mis- and disinformation. Although the study focused on a scientific network primarily in Southeast Asia, it is relevant to scientists in other parts of the world. A companion "how-to-guide", available in print and in digital form, outlines practical steps that scientists can take to assess mis- or disinformation, determine whether and how they should address it, and effectively communicate the corrective information they develop.</p>