According the United States (U.S.) Centers for Disease Control and Prevention, in 2015 influenza and pneumonia combined were the 8th leading causes of death (55,227 deaths in total) and the only communicable diseases ranked among the top ten killers in the U.S. What were the 10 causes of mortality in the U.S. in 1900 and 2015? Since communicable disease caused a relatively few deaths in the U.S. in 2015, why should public and public health professionals be concerned about them anymore and devote resources in their prevention and control? Solution Top 10 leading causes of deaths in US: Hearts diseases Cancer Airway diseases which are non infectious Cardio vascular disorders Accidents Alzheimer\'s disease Diabetes Pneumonia or influenza Nephropathys Suicide. The period of communicability is less for the communicable diseases, hence they are prevention of disease in early stages is possible. Prevention and control of influenza: Good ventilation of public buildings Encouraging sufferers to cover their faces with a handkerchief when coughing and sneezing Stay in home at the first sign of influenza Vaccination against the influenza, may be killed or level attenuated vaccines Prevention of exposure to influenza strains by hygiene practice Antiviral drugs like amantadine or rimantidine used Prevention and control of pneumonia: Pneumococcal pneumonia vaccination, PPV 23 AND PCV7. Education of mother to observe the sings of pneumonia. History taking and clinical examination are very important for management Physical examination for, breath count, chest indrawing, listen for stridor, wheezing and for severe malnutrition, cyanosis Any signs detected, they are treated early by antibiotics and other measures Improving the primary medical care services and development..