Allergic Reaction To Mosquito Bite
In the late 1800s and early 1900s a powerful new paradigm, Public Health, made great strides in reducing diseases and increasing human longevity. Public health is a concerted effort to address disease by applying measures at the society level. In the US, we often think of health efforts at the individual patient-doctor level. Public health works at a societal level to prevent illness an effort which if successful, can produce far better outcomes.
Source: Living With Insects Blog