Topics: Health statistics, public health, preventive medicine, epidemiology, communicable disease, infection, gastro-intestinal tract, skin, mucous membrane, respiratory tract, arthropod-borne infection, non-communicable disease, nutritional disorders, health services, economic evaluation, family health, environmental health, health promotion, health education, international health co-operation

Topics: epidemics, Girolamo Fracastoro, Epidemiology, Antony van Leeuwenhoek, arko Anton Plenčić, Edward Jenner, Pollender, Louis Pasteur, Robert Koch, Framingham study

Topics: virus, HIV-1, HIV-2, HIV Subtype, Opportunistic infection

Topics: V cholerae, cholera vaccine

Topics: Prevention, epidemiological triad, Biological Agents, incidence, incidence rate, epidemics, periodic fluctuation

Topics: Malaria endemicity, Holoendemic, Hyperendemic, Mesoendemic, Hypoendemic, malaria distribution, malaria parasite, complicated malaria, control of malaria

Topics: research, literature review

Topics: Statistics, variables, measurement, data, Descriptive Statistics, Qualitative data, quantitative data, Frequency Distribution Table, Graphical Presentation, frequency intervals, Histogram, Pie Chart, Measures of Central Tendency, Measures of Dispersion, mean, median, skewness, Mode, Variability, Range, quartile, Variance, percentile, Standard Deviation

Topics: world population, demographic transition, census, age pyramid, population change, population pyramid, doubling time, rule of 70, demographic indicators, skin diseases, skin lesions, measles, leprosy, Hansen's diseases, dermatophytosis, onchoceraciasis, herpex zooster, tinea corporis, acne vulgaris, alopecia areata, chronic discoid lupus erythematodes

Topics: Environmental Sanitation, water, municipal water purification, water purification, Coagulation, Flocculation, Sedimentation, Filtration, Disinfection, Chlorination, household water purification, Water standard, Water-borne disease, water-impounding disease, Water-vector disease, housing, building regulation, town-planning authorities, food hygiene, food safety, food handlers, food premises, Food Preservation, food regulation, nosocomial infections, causative organisms, oral health