Covid-19 vaccines go into use. Even if the vaccines prove safe — a reasonable assumption based on current information — managing the reporting and follow-up of what are known as adverse drug reactions will be critical to keeping to the high levels of public participation needed for a vaccination program to be successful.The US Centers for Disease Control and Prevention plans to send daily texts to those who are vaccinated for the first week and then weekly texts for six weeks, while the Food and Drug Administration will also be monitoring side effects in real time.It’s not clear if the UK’s monitoring system will have similar capabilities by the time the vaccine is rolled out.