In epidemiology, 2.8 million could represent a range of metrics such as the number of infection cases, deaths, hospitalizations, or even the population size at risk. For instance, during the 2014-2016 Ebola outbreak in West Africa, approximately 2.8 million people were at risk of contracting the disease. Similarly, 2.8 million could also signify the number of vaccinations administered during a large-scale immunization campaign.
