Community Medicine (

 **Community Medicine (Preventive & Social Medicine - PSM)** is an important subject in **second-year MBBS**, focusing on **public health, epidemiology, disease prevention, and healthcare programs**. It helps in understanding population health and disease control strategies. --- ### **Main Lessons in Community Medicine** ### **1. Public Health & Preventive Medicine** - **Concept of Health & Disease** - Definition of health (WHO) - Natural history of disease - Levels of prevention (Primordial, Primary, Secondary, Tertiary) - **Health Indicators & Measurements** - Mortality & Morbidity rates (IMR, MMR, DALY, QALY) - Disease surveillance & notification --- ### **2. Epidemiology (Study of Diseases in Populations)** - **Types of Epidemiology** - Descriptive (Person, Place, Time) - Analytical (Case-control, Cohort studies) - Experimental (Clinical trials, Vaccine trials) - **Modes of Disease Transmission** - Direct (Droplet, Contact) - Indirect (Vector, Fomite) - **Epidemiological Triad** – Agent, Host, Environment - **Investigation of an Epidemic** – Steps & control measures --- ### **3. Communicable & Non-Communicable Diseases** - **Communicable Diseases** - Tuberculosis (RNTCP/NTEP, DOTS strategy) - Malaria (Life cycle, National Malaria Control Program) - HIV/AIDS (Transmission, ART, Prevention) - Diarrheal diseases & Cholera (ORS, Water sanitation) - Vaccine-preventable diseases (Polio, Measles, Hepatitis) - **Non-Communicable Diseases (NCDs)** - Hypertension, Diabetes, Cardiovascular diseases - Cancer screening & prevention (Tobacco control, Lifestyle modifications) --- ### **4. Preventive Medicine & Vaccination** - **National Immunization Schedule (India)** - Live vs. Killed Vaccines - Cold Chain System - **Nutritional Health & Deficiency Disorders** - PEM (Kwashiorkor, Marasmus) - Micronutrient Deficiencies (Vitamin A, Iron, Iodine) --- ### **5. Health Programs & Policies** - **National Health Mission (NHM)** - **Ayushman Bharat (PM-JAY, HWCs)** - **Universal Immunization Program (UIP)** - **Reproductive & Child Health (RCH) Program** - **Water Sanitation (Swachh Bharat Abhiyan)** - **Family Planning (Contraceptives, MTP Act)** --- ### **6. Biostatistics & Research Methods** - Measures of Central Tendency (Mean, Median, Mode) - Study Designs (RCTs, Case-Control, Cross-Sectional) - Sensitivity & Specificity (Screening Tests) --- ### **Study Tips for Community Medicine:** ✅ Use **mnemonics** (e.g., “WATER” for waterborne diseases – Worms, Amoebiasis, Typhoid, E. coli, Rotavirus) ✅ Refer to **Park’s Textbook of Preventive & Social Medicine** ✅ Focus on **disease control programs & epidemiological concepts** ✅ Practice **biostatistics numericals** for exams

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