RRB Health & Malaria Inspector cheat sheet

Indian Railways is administered by the Railway Board under the Ministry of Railways; the Board's Chairman also acts as ex-officio Principal Secretary to the Government of India in the Ministry of Railways.

The Railway Budget was merged with the Union Budget in 2017, ending a practice that had run since 1924; railway finances are now presented as part of the general budget.

National Health Mission (NHM) comprises the National Rural Health Mission (launched 2005) and the National Urban Health Mission (launched 2013), with the goal of universal access to equitable, affordable, quality health care.

Article 47 of the Indian Constitution places a duty on the State to raise the level of nutrition, standard of public health, and prohibit intoxicating drinks and drugs injurious to health.

The World Health Organization was established on 7 April 1948; World Health Day is observed on 7 April each year.

India's National Vector Borne Disease Control Programme (NVBDCP) is the nodal programme for malaria, dengue, chikungunya, Japanese encephalitis, kala-azar and lymphatic filariasis.

Sustainable Development Goal 3 targets good health and well-being; SDG target 3.3 specifically calls for ending malaria, TB, and other communicable disease epidemics by 2030.

The National Health Policy 2017 set an aim of raising government health expenditure to 2.5% of GDP; the Ayushman Bharat scheme (2018) covers secondary and tertiary care through PM-JAY.

Percentage change = (New value − Old value) / Old value × 100; a rise followed by an equal-percentage fall always yields a net decrease of (x²/100)%.

Simple interest I = P·R·T/100; compound amount A = P(1 + R/100)^T, and for half-yearly compounding use R/2 and 2T.

Speed conversion: 1 km/h = 5/18 m/s; distance = speed × time. For a train of length L crossing a platform of length P, time = (L + P)/speed.

Work: if A alone finishes in x days and B in y days, together they finish in xy/(x + y) days.

Average = sum of observations / number of observations; for two groups with means m1, m2 and sizes n1, n2, combined mean = (n1·m1 + n2·m2)/(n1 + n2).

Ratio and proportion: if a:b = c:d then ad = bc; for dividing a sum S in the ratio a:b:c, the shares are S·a/(a+b+c), S·b/(a+b+c), S·c/(a+b+c).

Profit% = (SP − CP)/CP × 100; when a discount d% is given on marked price MP, SP = MP(1 − d/100).

Mensuration: area of circle = πr², circumference = 2πr; volume of cylinder = πr²h; volume of sphere = (4/3)πr³; 1 litre = 1000 cm³.

Series rule: check differences, then ratios, then alternating or square/cube patterns; e.g., 2, 6, 12, 20, 30 follows n(n+1).

Alphabet positions: A=1 … Z=26; EJOTY mnemonic fixes E=5, J=10, O=15, T=20, Y=25. Reverse position = 27 − forward position.

Coding-decoding: identify shift (Caesar type), reversal, or substitution; for letter-shift codes compute the offset per position, noting it is often constant or progressive.

Blood relations: draw a tree; vertical lines indicate generations, horizontal lines indicate siblings/spouse; never assume gender from a name alone.

Direction sense: use a coordinate sketch; net displacement uses Pythagoras when the path turns at right angles, and final facing direction is tracked separately from displacement.

Syllogism: a conclusion follows only if true in every possible Venn diagram consistent with the premises; 'some' and 'no' statements do not yield 'all' conclusions.

Odd-one-out and analogy: classify by number properties (prime, perfect square), letter patterns, or semantic category before testing exotic rules.

Clock and calendar: hands coincide 11 times in 12 hours; angle = |30H − 5.5M| degrees. In a non-leap year, 1 January and 31 December fall on the same weekday.

Plasmodium life cycle: sporozoites injected by the female Anopheles mosquito enter hepatocytes, then merozoites invade RBCs causing the fever cycle; gametocytes are taken up by the next mosquito.

Haemoglobin carries O₂ bound to iron in the haem group; normal adult male level is about 13–17 g/dL, female 12–15 g/dL.

Blood groups follow ABO and Rh systems; O-negative is the universal red-cell donor and AB-positive the universal recipient.

Human heart has four chambers; the left ventricle pumps oxygenated blood into the aorta, and the SA node acts as the natural pacemaker.

Insulin is secreted by beta cells of the islets of Langerhans in the pancreas and lowers blood glucose; glucagon from alpha cells raises it.

Vitamins: A (retinol) for vision, B-complex water-soluble, C (ascorbic acid) for collagen and immunity, D for calcium absorption, K for clotting. Deficiency of vitamin B1 causes beriberi; of vitamin C, scurvy.

Pathogens: malaria - Plasmodium; tuberculosis - Mycobacterium tuberculosis; cholera - Vibrio cholerae; typhoid - Salmonella typhi; dengue - dengue virus via Aedes aegypti.

Immunity types: innate (non-specific barriers), active (own antibodies after infection/vaccine), passive (ready-made antibodies, e.g., colostrum, antiserum) - passive is immediate but short-lived.

Air pollutants: primary (SO₂, NOx, CO, particulate matter) versus secondary (ozone, PAN, sulphuric acid mist) formed by atmospheric reactions.

PM10 = particles ≤10 µm; PM2.5 = ≤2.5 µm. PM2.5 penetrates deep into alveoli and is the pollutant of greatest health concern in Indian cities.

National Ambient Air Quality Standards (NAAQS, 2009) cover 12 pollutants; the National Air Quality Index runs from 0–50 (Good) to 401–500 (Severe) across six categories.

BOD measures oxygen consumed by microbes decomposing organic matter; COD measures oxygen equivalent of all oxidisable matter. High BOD indicates organic pollution.

Eutrophication is nutrient (N, P) enrichment of water causing algal blooms, oxygen depletion, and fish kills.

Noise is measured in decibels (dB(A)); the Factories Act and Environment (Protection) Rules prescribe exposure limits, with 90 dB(A) for 8 hours as a common industrial benchmark.

The Environment (Protection) Act 1986 is umbrella legislation; Water Act 1974 and Air Act 1981 are the sectoral statutes enforced by SPCBs.

Waste hierarchy: prevent, reduce, reuse, recycle, recover, dispose. Biomedical waste is segregated into colour-coded categories under the BMW Management Rules.

Incidence = new cases / population at risk per unit time; prevalence = all existing cases / total population. Prevalence ≈ incidence × mean duration.

Epidemic = excess cases above expected in a defined area/time; endemic = habitual presence; pandemic = global spread. Attack rate = cases / exposed × 100.

Sensitivity = TP/(TP+FN); specificity = TN/(TN+FP); positive predictive value depends on prevalence.

Herd immunity threshold = 1 − 1/R₀; for R₀ = 4, the threshold is 75%.

Safely managed sanitation means use of an improved facility not shared with other households, with excreta safely disposed in situ or treated off-site.

Sanitary latrine requirements: water seal to prevent odour and fly access, impervious lining, and adequate distance (typically ≥15 m) from drinking-water sources.

Chlorination: residual free chlorine of about 0.2–0.5 mg/L after contact time indicates safe disinfection; MPN/coliform test assesses bacteriological quality.

Screening for disease control uses the iceberg concept - only the clinical tip is detected; surveillance must capture subclinical and carrier cases.

Human malaria is caused by five Plasmodium species: P. falciparum (most severe, cerebral malaria), P. vivax (relapsing, hypnozoites), P. malariae, P. ovale, P. knowlesi (zoonotic).

Transmission is by the bite of an infected female Anopheles mosquito, which bites mainly between dusk and dawn; A. culicifacies is a major rural vector in India.

Diagnosis: rapid diagnostic tests detect HRP-2 (P. falciparum) or pLDH; microscopy of thick and thin Giemsa-stained blood films remains the gold standard for species identification.

P. vivax requires primaquine for hypnozoite clearance (14-day course) after G6PD testing; P. falciparum is treated with artemisinin-based combination therapy (ACT) plus a single-dose primaquine gametocytocide.

Severe malaria: treat with parenteral artesunate (or artemether/quinine), then complete with a full ACT course once oral intake is tolerated.

Vector control: indoor residual spraying (IRS) and long-lasting insecticidal nets (LLINs) are the two core interventions; larvivorous fish and larviciding target breeding sites.

National framework for malaria elimination in India (2016–2030) has three phases: elimination (2016–2022), pre-elimination (2023–2027), and elimination (2028–2030); malaria is notifiable.

Malaria in pregnancy causes maternal anaemia, low birth weight and miscarriage; IPTp with sulfadoxine-pyrimethamine is used in high-transmission settings outside India's low-transmission context.

Dengue and chikungunya are transmitted by Aedes aegypti, a day-biting mosquito breeding in clean stagnant water in containers; source reduction is the main control.

Japanese encephalitis is transmitted by Culex mosquitoes with pigs and water birds as amplifying hosts; vaccination is part of the universal immunisation programme in endemic districts.

Kala-azar (visceral leishmaniasis) is transmitted by the sandfly Phlebotomus argentipes; India's elimination target relies on indoor residual spraying and rK39 rapid diagnosis.

Lymphatic filariasis is transmitted by Culex quinquefasciatus; the Mass Drug Administration uses a single annual dose of DEC plus albendazole for five years.

TB control follows the DOTS strategy: sputum smear microscopy, supervised short-course regimen, and treatment adherence to prevent MDR-TB.

Universal precautions: hand hygiene, gloves, safe sharps disposal, and immunisation of health workers against hepatitis B.

Outbreak investigation steps: verify the diagnosis, define and find cases, describe by time-place-person, generate hypotheses, and implement control measures.

Integrated vector management combines environmental management, biological control, chemical control and community participation, and is preferred over single-method approaches.

Indian Railways Medical Department provides preventive and curative care through zonal hospitals, divisional hospitals, health units and static/ambulance units; the Health & Malaria Inspector reports to the Medical Officer in charge.

Water supplied at stations and in coaches must meet prescribed bacteriological and chemical standards; samples are routinely collected and tested, with residual chlorine checked on site.

Food and catering hygiene at stations and in trains is regulated under the Food Safety and Standards Act 2006 and the Railways' own catering hygiene instructions.

Sanitation in coaches: bio-toilets are fitted in most coaches; cleaning is monitored through on-board housekeeping and mechanised cleaning contracts at major stations.

Mosquito control on railway premises targets stagnant water in drains, water tanks, and yards; anti-larval measures and fogging are undertaken in a defined schedule.

Railway hospitals follow the Employees' State Insurance/railway medical benefit rules for serving and retired employees and their dependants.

Notifiable diseases must be reported to the local health authority; railway medical officers also coordinate with district health authorities for outbreaks on railway premises.

Statutory backing includes the Railways Act 1989 provisions on sanitation and public health, plus the Factories Act 1948 for railway workshops.

First aid priorities: airway, breathing, circulation (ABC); for adults, chest compressions at 100–120 per minute with a depth of 5–6 cm, 30 compressions to 2 breaths.

Bleeding control: direct pressure, elevation, and pressure bandage; tourniquet only for life-threatening limb haemorrhage, with time of application recorded.

Burns: cool with running water for at least 20 minutes, cover with a clean non-adherent dressing, do not apply oil or ice; estimate extent using the rule of nines.

Fractures: immobilise in the found position, check distal pulse and sensation, and never attempt to reduce a fracture in the field.

Occupational hazards in railway work include noise-induced hearing loss, heat stress, silica dust, chemical exposure, and electric shock; PPE and periodic medical examinations are mandated.

Heat exhaustion vs heat stroke: heat stroke has core temperature >40 °C with altered mental status and is a medical emergency requiring rapid cooling.

Snake bite: immobilise the limb, remove constricting items, and transport rapidly; avoid incision, suction, or ice. Antivenom is given in hospital.

Poisoning: identify agent, preserve container, and do not induce vomiting in corrosive or petroleum ingestion; activated charcoal is time-sensitive and given only on medical advice.

Health education aims at behaviour change through knowledge, attitude and practice (KAP); message design must match literacy level and local language.

Communication channels: interpersonal (best for behaviour change), mass media (reach), and community networks (trust); the choice depends on the objective.

Key malaria messages: use bed nets, clear stagnant water, seek a blood test for fever, complete the full treatment course, and do not self-medicate.

IEC (Information, Education, Communication) materials include posters, flip charts, wall paintings, and audio-visual tools; BCC adds a behaviour-change focus with formative research.

Health literacy barriers include low literacy, superstition, cost, distance, and gender norms; messages must address the specific barrier rather than repeat general advice.

Monitoring of health education uses process indicators (sessions held, materials distributed) and outcome indicators (knowledge score, net use rate, treatment completion).

School health programmes and 'Swasth Bachche Swasth Bharat' use children as change agents who carry hygiene messages into households.

Community health workers (ASHA, ANM, Anganwadi worker) are the frontline channel for interpersonal education at the village level.

Village Health, Sanitation and Nutrition Committee (VHSNC) is constituted under the Panchayati Raj framework and manages untied funds for local health action.

ASHA (Accredited Social Health Activist) is a trained female community health worker, one per 1000 population, linked to the sub-centre and paid by performance.

Rogi Kalyan Samiti (RKS) is a hospital-level patient welfare committee that manages user charges and local facility improvements.

National Health Mission supports JSY/JSSK cash incentives for institutional delivery, and the Janani Shishu Suraksha Karyakram provides free delivery and newborn care.

National Programme for Prevention and Control of Cancer, Diabetes, CVD and Stroke (NPCDCS) addresses non-communicable diseases at district level.

Pulse Polio and Mission Indradhanush target full immunisation coverage; U-WIN is the digital registry for immunisation records.

Community-based monitoring uses social audit and public reporting to hold health facilities accountable for service availability.

Swachh Bharat Mission (Gramin and Urban) links sanitation to health outcomes through elimination of open defecation and solid-liquid waste management.