common communicable diseases
In addition, we'll also look at what, if any, global pharmaceutical companies may be able to take advantage of these multi-million-person, and even billion-person, opportunities. So, without further ado, here are the five most common infectious diseases. Hepatitis-B.According to current statistics, hepatitis-B is the most common infectious disease in the world, affecting some 2 billion people -- that's more than one-quarter of the world's population.n addition, we'll also look at what, if any, global pharmaceutical companies may be able to take advantage of these multi-million-person, and even billion-person, opportunities. So, without further ado, here are the five most common infectious diseases. Hepatitis-B.