30K views · 2K reactions | Dr Maria Van Kerkhove, WHO's technical lead on COVID-19, talks about the status of the scientific work needed to find the origins of the SARS-CoV-2 virus. Why it is important to understand the origins of pandemics, What is WHO's role in achieving this and, How WHO works to prevent future pandemics. | World Health Organization (WHO) | Facebook

34K views · 918 reactions | SARS-CoV-2 infection produces detectable immune responses; however, the extent to which previously infected people are protected from a second infection is uncertain. Understanding whether post-infection immunity exists and how long it lasts has major implications for the SARS-CoV-2 pandemic. New research findings are summarized in a short video. https://nej.md/3q0frZL | The New England Journal of Medicine | Facebook