Health protection and promotion and disease prevention: definitions, aims, application. Risk and risk factors, types of prevention activities. Epidemiology and prevention of chronic (non-communicable ) diseases: cancer, cardiovascular diseases (coronary heart disease and stroke), diabetes and metabolic syndrome. Tobacco smoke and alcohol as causes of diseases and death. Epidemiology of infectious (communicable ) diseases: the relationship between human host and agents of infectious diseases, sources and reservoirs, penetration and elimination routes, modes of transmission, infections in a community. General prophylaxis of infectious diseases: notification, isolation, sterilization, disinfection and disinfestation, use of vaccines and immunoglobulins. Vaccine strategies. The scheduled vaccination programs for children, adults, old people.Epidemiology and prevention of some infectious diseases, particularly those preventable by vaccines: poliomyelitis, tetanus, diphtheria, pertussis, measles, rubeola, mumps, chickenpox, rotavirus enteritis, influenza, bacterial meningitides, tuberculosis, viral hepatitis. Food and Nutritional Hygiene: epidemiology and prevention of food-borne infections and intoxications