Infectious Disease Epidemiology in current times: Germ theory inside the Black Box?

Infectious disease epidemiology plays an important role in understand the biology of a pathogen and disease progression at a population level. A number of intrinsic and extrinsic factors play role in spread of infectious diseases and some of these aspects will be deliberated in the context of an arbovirus, namely, chikungunya virus. Further, the impact of non-communicable diseases on the epidemiology of the current COVID-19 epidemic will be discussed.