Q.Collect information about the symptoms, preventive measures and treatments for Dengue, Swine flu and Tuberculosis (TB).

Dengue (a virus carried by the female Aedes mosquito), swine flu (the influenza A H1N1 virus, spread by droplets) and tuberculosis (the bacterium Mycobacterium tuberculosis, spread by droplets) each have a characteristic set of symptoms, a specific route of spread that prevention targets, and a distinct treatment.

Suggested plan.

1. Sources - the chapter's own dengue entry (section 10.3), the WHO and the Government of India health-ministry pages on H1N1 and on the National TB Elimination Programme; note the source and date against every fact you record.
2. Dengue - viral, vector-borne (female Aedes, which bites by day and breeds in small collections of clean water). Symptoms: sudden high fever, severe headache, retro-orbital pain, muscle and joint pain ('break-bone fever'), rash, and in severe cases bleeding and a sharp fall in platelets. Prevention: empty and scrub water containers weekly, cover stored water, use repellents and full sleeves. Treatment: no specific antiviral; rest, oral fluids, paracetamol (never aspirin) and platelet monitoring in hospital when needed.
3. Swine flu (influenza A H1N1) - viral, droplet-borne. Symptoms: fever, cough, sore throat, running nose, body ache, fatigue, sometimes vomiting, diarrhoea and breathlessness. Prevention: hand washing, covering the nose and mouth when coughing, staying home when ill, avoiding crowded places during outbreaks, and the seasonal influenza vaccine. Treatment: antiviral drugs (e.g. oseltamivir) started early, plus supportive care.
4. Tuberculosis - bacterial (Mycobacterium tuberculosis), droplet-borne, usually of the lungs. Symptoms: cough lasting more than two weeks, evening rise of temperature, night sweats, loss of weight and appetite, chest pain, blood in sputum. Prevention: BCG vaccination in infancy, early diagnosis (sputum test, chest X-ray) and treatment of every case, good ventilation, cough etiquette. Treatment: a fixed multi-drug course of at least six months under DOTS, completed without a break to prevent drug resistance.
5. Report - the comparison table, one paragraph on which of the three is preventable by a vaccine and why, and a note on the local health centre's services for each. The same disease vocabulary appears in the NCERT/CBSE Class 12 chapter on human health and disease, which the MSBSHSE syllabus is aligned with.