Public Health  Recurring Cases, Unanswered Questions Continue to Linger With China gradually returning to a state of normalcy, questions about recurring cases among individuals previously infected with COVID-19 continue to mount. Most recently, South Korea reported on 163 patients who were previously assessed as cured of the virus to have suffered from a second infection. In these instances, the individuals had been subjected to and passed two COVID-19 tests within a 24-hour period before their release from quarantine. An article presented in the International Journal for Infectious Diseases from earlier this month reported on a similar set of instances involving COVID-19 patients in Wuhan that subsequently tested positive again for...