The document discusses several key indicators and diseases relevant to public health: 1. Disease rate and definitions of disease, noting they can affect people physically and emotionally. 2. Major infectious diseases in Pakistan like hepatitis, typhoid, malaria, and dengue. Non-communicable diseases are also rising. 3. Infant mortality rate which Pakistan had the highest rate of in the world according to a 2012 report. Rates have declined but remain high. 4. Viber, a free messaging application available across platforms discussed in terms of its history, features, and supported languages.