What is epidemiology? More chapters in Epidemiology for the uninitiated Epidemiology is the study of how often diseases occur in different groups of people and why.
354 WIS International Employee Salaries. Browse WIS International Salaries by Job Title â. WIS International employees earn $24,000 annually on average, or $12 per hour, which is 87% lower than the national salary average of $61,000 per year.
  The median expected salary for a typical Social Worker (BSW) in the United States is $41,282.     Quick facts from the US Bureau of Labor Statistics: * Seventy-on â¦ e percent of all social workers are women. Their average annual salary is $30,108. * The average annual salary for male social workers is $34,372.n the Republic of Ireland, the starting salary for a social worker  is 43,000 euros or $55,620. For a starting social worker in  Northern Ireland, the annual income is 22,0 â¦ 00 euros or $28,460.