From 2017 to 2019, Twitter users in the United States saw many tweets related to vaccination but only rarely encountered anti-vaccine content and almost never saw content from bots.
The history of anti-vaccination theories can help us understand how such claims capture a popular following. The same misinformation used against 19th century smallpox vaccine is still in use today.
A sports management scholar weighs in on the potential consequences of holding Big Ten football games in the fall instead of waiting for a vaccine or better safety procedures.
Will a vaccine for COVID-19 be safe? Animal testing, human clinical trials and post-approval surveillance give us good grounds to believe that a future approved vaccine will work and be safe.
The cold supply chain keeps vaccines fresh during distribution, but the current system is nowhere near large enough to distribute the billions of COVID-19 vaccines that the world needs.
Dean Faculty of Health Sciences and Professor of Vaccinology at University of the Witwatersrand; and Director of the SAMRC Vaccines and Infectious Diseases Analytics Research Unit, University of the Witwatersrand