Why Does COVID-19 Testing Still Matter as Vaccines Roll Out? “The vaccine is great, but you still need to test people.” Why Global Citizens Should Care For people living in poverty, health care and COVID-19 testing locations are not widely available. Diagnostic testing is key to tracking symptoms of COVID-19 and protecting public health. The United Nations’ Global Goal 3 aims to ensure healthy lives and promote well-being for all. You can join us and take action on this issue . COVID-19 vaccine distribution is increasing across the globe, but some of the most vulnerable communities still lack access to testing sites through their local health departments.