Via her blog Pathogen Perspectives, Dr. Heather Lander raises an ethical issue: Ebola Patient Zero: What we do, and do not, need to know about an epidemic index case. Excerpt:
Whenever there is an infectious disease epidemic there will also be an index case, or patient zero: the first recognized case of the disease in a population; the case that alerts you to the presence of the disease. From an epidemiologic perspective, identifying this case is critical because it can provide really important information. How the index case got infected can offer insight into the pathogen's natural reservoirs or modes of transmission, and can also help clarify at what point in disease progression the patient was infectious and how the disease initially moved through the population.
All are critical in helping define strategies for future epidemic prevention, control and health care approaches. For these reasons there are things we need to know about an index case. We need to know where they lived, where they went and what they did on the days they might have become infected.
Who did they have contact with? When did symptoms start? What did they eat? Did anything unusual happen? Did they go hunting? Was there an insect or animal bite? An injury? A fall? A swim? Who helped them? Are they sick now? These are all important and can help pinpoint the original source of infection.
But do we actually need a name?
Epidemics aren't only about hard science. And while learning all we can about the virus and its transmission will allow us to better fight future epidemics, we shouldn't neglect the human element in the pursuit of knowledge. We have numbers on graphs and charts: cases, deaths, beds. But these statistics are about people and it's often the human stories that drive us. Maybe that's why we look for the names.
But should we look for that name?